Malicious PDF — malware analysis report

Static analysis result for SHA-256 93696eed1078d1d4…

MALICIOUS

PDF

80.6 KB Created: 2021-09-15 22:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2a5d8351c8da65dfe25da37453de275c SHA-1: 91dc1f7341632fa1f0e32fed0e6817f2f9cb521b SHA-256: 93696eed1078d1d46ce2b3e4bcdcecc7631f676c98e96f9ec2f767850bc09de6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links are likely used to distribute phishing content or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=moto+g5+screenshot+not+working PDF link annotation
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/31e62cb91676635f1d7e52f6e118d75e/mifotanetodomoliri.pdfIn PDF document text
    • https://pingthye.com/userfiles/files/18085872767.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/161360396c8fce---jokebazebabagupajitadika.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/77653647189.pdfIn PDF document text
    • http://lynxitservices.com/ckfinder/userfiles/files/watixokafifizevagu.pdfIn PDF document text
    • https://peterdegendt.be/file/85179386496.pdfIn PDF document text
    • http://hyundai-baoloc.com/luutru/files/tetuzapepuzutorepinatidi.pdfIn PDF document text
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kijigujewun.pdfIn PDF document text
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/pupumogamugabebosifij.pdfIn PDF document text
    • http://royalrep.com/userfiles/files/6770703617.pdfIn PDF document text
    • https://glaze-metalart.com/upload/files/rasujanulemurolusopukov.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3f5138b7e---22290097805.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/84178617106.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/womemodefosawexojega.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/defemuwanetuxigivadozewid.pdfIn PDF document text
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/85548930284.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/76798050437.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/e6a083dc2ea694b90c8e66f4fa606c4a/5808829226.pdfIn PDF document text
    • https://krusomying.com/data/file/789754462.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/pirozuwelapogezov.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/poxaga.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/70231987978.pdfIn PDF document text
    • 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_off0000d47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 18264 bytes
SHA-256: 80034f3ff8c1218e0fccea1a3623164842ae4701a9cd1a604f369eeb6d32c0fb
font_02_sfnt_off00011b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5A 10608 bytes
SHA-256: 56944ec5dc8dc27a77f5d8bfe636347adcac6daec2dd1b539e4856ab73df0799