Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ecb296b7bd47d7…

MALICIOUS

PDF

84.7 KB Created: 2021-06-26 00:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 54795131f3fc8d3e44b29b5ae79d67c5 SHA-1: 26a48cd456372337829d3b5db984e8915a86a4c1 SHA-256: d6ecb296b7bd47d7f6bd367f42ca94b1c1339ca5eef418e292e35f0a1764dea2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal that the PDF acts as a link farm, directing users to download other PDFs from compromised WordPress sites. While no scripts were directly extracted, the nature of the links suggests a phishing or scam campaign designed to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c21192eef09---vawufagumuzoved.pdf
    • http://magogaralbamoble.com/galeria/files/jiwajebasukemogifowiwa.pdf
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c77bf88bf7794c87a5b1d38d0a235717/mojixazasanamu.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160b99c092d821---11518618323.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/7lpomcsjsh76fmjr2cfb400e66/zagaramipivazifasire.pdf
    • https://chp-travel.ir/data/file/biniva.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097817e5428e---86556254213.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be82b87c3a9---13791974616.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607982eda8e53---89425900921.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/99caf181bacf81a3c0f53efce639c264/namuzelafijumifuna.pdf
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e9d37b626---bumedabazafugobafixexej.pdf
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/fdf6a2f4ec7480f1246c7264a30bfe46/21784396274.pdf
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/7ae91c507cafa0ff9f7467ee3fd409a7/babimulikelaroj.pdf
    • https://arrayamed.com/userfiles/file/letaxifevovikogoliwi.pdf
    • http://kasargod.net/uploads/file/fuxogizovogene.pdf
    • https://sindonis.com/userfiles/file/jomapowas.pdf
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/aaa4cf27664bf8ca6bb1dd7e6cfad0bf/28691354359.pdf
    • https://hr-serdahel.hu/images/file/wifajesexajabisagerezuza.pdf
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/5862f813441edeb85eee7dfccb783930/94889115457.pdf
    • http://wjcopy.com/upload/files/29131650319.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086b3f0f19b1---79632527563.pdf
    • https://kristinanamaste.eu/files/59177928565.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=expo+marker+stain
    • 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_off0000e8e4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E4 16792 bytes
font_01_sfnt_off000100fb.bin
16a9789358d641c00f594b22c2651f60c2f668f40f76ed7d4ec342540364c788
pdf-font-stream PDF embedded font (sfnt) at offset 0x100FB 10544 bytes
font_02_sfnt_off00011903.bin
41edbd03babf8a8f1b925295fb019855fb5ec9deac1dc53505327d230880b83a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11903 17272 bytes