Malicious PDF — malware analysis report

Static analysis result for SHA-256 689f07d072e91245…

MALICIOUS

PDF

99.9 KB Created: 2021-06-26 04:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b51268221efe395623d2fca9e2929229 SHA-1: e3816adbe476b1b4e15b859730f65922492233ee SHA-256: 689f07d072e912458f5313b1bf3e12c62507a0486ce661fa77f2d03c6afb8fb6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of multiple external URIs and the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicate a social engineering tactic to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://coretry.ru/uplcv?utm_term=scrap+withered+bonnie PDF link annotation
    • http://seanmore.com/userData/board/file/rapavugenexoditijaga.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877d3590eb3---17662624107.pdfIn PDF document text
    • http://odmooregolf.com/clients/e/e7/e7046aca88cfcc92de0be8f3f6b3de3d/File/36564708599.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/24550529120.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/vsr59d0ah3hgiq75jp2emhbden/votikeg.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/233n9clgomnd8j1af42v1u4hv3/60504984323.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/s17m9ish7om6lq90koo8hl53mq/zopofigiro.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c27ae389585---jazonenolugikaparugim.pdfIn PDF document text
    • https://pearproperties.in/userfiles/file/57747066148.pdfIn PDF document text
    • https://faprosid.com/file/mezij.pdfIn PDF document text
    • http://www.gesas.it/media/mailinglist/file/kufivete.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/41fd6a8eafbcaefc1cf57309a381c4d8/39283762703.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/31635278503.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/99169609732.pdfIn PDF document text
    • http://st03.it/userfiles/files/sewivuvazexajawojex.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ab19b5c4b3f---31726492481.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/a0b2c818f0770eeaf45372c312b3c133/rudirobutibufo.pdfIn PDF document text
    • http://geoplan.su/userfiles/file/3218863323.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/49cbfbfab227d6ede123b3006b6cc39f/vufenodezazafovotez.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4b71bf8e4---vebopalinoketovuvaxet.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/00604c02818b48ef208851619217ba19/55393175937.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8D 17872 bytes
SHA-256: b9f1d6b6ef6464f3fd36080e55fac94ca2cd2cd0e9dbde70c1e85c7d01e0872b
font_01_sfnt_off00013cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC7 10700 bytes
SHA-256: 4e210532b7900697018df63abd29bf8937584a3b030875c4e821aa428d7d4407
font_02_sfnt_off00015518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15518 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00016d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D25 5288 bytes
SHA-256: 31a8ea8345300f1d69135f4e235f176bc813c1475242829c16f551c92e5f48e4

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