Malicious PDF — malware analysis report

Static analysis result for SHA-256 078672ab169dee13…

MALICIOUS

PDF

86.5 KB Created: 2021-06-28 19:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 408b5a2ef90345d1102b7feddb1dbebe SHA-1: 8b2b3e2c4923f0eb28d73e58f172e4ce1b4d9dbf SHA-256: 078672ab169dee1319f107a91ffb4611115f4660c767540be33e2648fe17593e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The presence of embedded URLs and the nature of the heuristics indicate it is likely attempting to redirect users to malicious external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/71430b365e7bdd4554c64b8a9b2618e8/90187738447.pdf In PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/97idetufuc90kfvvb67md8bgfd/jagiz.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/34828654309.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cbe7ac5858---18489379852.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/fa9338fd685481a0925e7d454ea48e72/sebubawox.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/vajagupebipogodeket.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/f3631100f03e5b678214b1259ee0448b/detabepopugivux.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d31c20ca69---23540537776.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/0392906963ec8341abfd516e5664e548/melatutenodixunor.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/43580817810.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/55118833168.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160cd337c399cc---9714959291.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/57c721b6423106da9f39580a94a847d2/83134552255.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/fudoguba.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cd4e00392d6---24207802958.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/72d1bf0d382f5128bec15630724fb7c7/rowiseverojaxerenular.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160b58d66d789f---bopezawimunogubudizig.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/zibemewokuwugawa.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4c649207e---labipujinan.pdfIn PDF document text
    • http://dade666.com/userfiles/202106file/2021061012575270554.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/l544h8itg5shqtbk8iiklod6mo/71019169667.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/59678254098.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/43936757950.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d5d48d0e7---41859634267.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/4153642938.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607a509f8dbb0---fisadiji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=bible+verses+about+family+problemsPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 10888 bytes
SHA-256: 02a63c5114f213e41ffae289acaf1a3d80d9b38080fccabaefb3f4f565803dd8
font_01_sfnt_off00010925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10925 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12137 16788 bytes
SHA-256: 83a9470f304e8d7b75020ab5dd66113c15cbf4b0eeb49173e1176d77cf00a050