Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c060207fa93a88d…

MALICIOUS

PDF

72.4 KB Created: 2021-06-30 04:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dd5880bf4382fead1f7253330b000565 SHA-1: e144f81698d9d86a0a3f2be60a1dc86373b3530d SHA-256: 2c060207fa93a88dd6b2a4c6866d051e7b4a27aa319dab3711fa7a3f4e0e00aa
156 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to various websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of multiple distinct hosts and the use of UTM parameters suggest an effort to obscure the true destination and potentially for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/c28150fc62f4b779b2f6604c501d574a/40550462372.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/7bd7e3f0cd1633a437cac222999a01b6/87343276758.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a1a91d97790d1559194ddfee6d0dd40/lewelorozoxu.pdf
    • http://wjvanderheidedienstverlening.nl/uploads/file/wixigipotekunujusuto.pdf
    • http://vce34.ru/attachments/file/koniz.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/742bf3013fc1529aaea062e7017441f4/demitewavidowika.pdf
    • http://apexibd.com/uploads/fck_uploads/file/nofufivexagiti.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078c05c41de6---bokuzapasinog.pdf
    • https://amadesafar.ir/basefile/amadesafarir/files/42332614760.pdf
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/af4cbde68f0a94d7907278c4af4a10cb/74487495735.pdf
    • https://adepotcustom.com/UploadFiles/file/20210429105547146.pdf
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079952c57f60---dafewukofu.pdf
    • https://ikima.fr/uploads/file/3140115236.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/2fa6c634a34b3ce81bb71b507049f38c/51682903063.pdf
    • http://yoron.net/up/files/20732303900.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbd286cd23---rajinomukinaw.pdf
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef3b7bd51f---30863344183.pdf
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/bd4c33217fe318e3c0858ee44822dfc3/fewofepirutedipizilox.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/jrq4ur363qrqspeepkmr2hviv6/58625904751.pdf
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/beae4f1ae156d981b3320ce3d6b84fe7/41650911618.pdf
    • https://thegioibaobicarton.com/Images_upload/files/levolufazafu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=13+reasons+in+13+reasons+why
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bab4.bin
9b8519e6b4b2864a3c1916bc19e2de61389104d96e1502d1c84b61265a1dd122
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB4 10388 bytes
font_01_sfnt_off0000d23d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD23D 16792 bytes
font_02_sfnt_off0000ea4f.bin
d6086e3cd08a8cc29a37a85f63127ac4bd9e4fae7c91adb0145b50a10244bad8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4F 16500 bytes