Malicious PDF — malware analysis report

Static analysis result for SHA-256 72112e078097b010…

MALICIOUS

PDF

74.8 KB Created: 2021-06-27 15:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 078bbc5611e83d1b3f0fb6b13ec2371f SHA-1: 349a60e1b4eb68d37f67dbfb3d2c53f64500432e SHA-256: 72112e078097b010c72cb9062396c34c5b0310180aa25d96be5c3cc02dfc5ec9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various URLs, many of which are hosted on compromised WordPress sites. The primary goal appears to be phishing or redirecting users to malicious content, as suggested by the 'Phishing.Trojan' detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/890d78b3a64f62caa1dcddf0256caf7d/37633786889.pdf
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/abce404813f9dd26d66139bd9c45e6c0/52451712650.pdf
    • http://euro520.net/userfiles/file/1624215898594219964.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077353930c11---xoposoxuza.pdf
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/1e6d54f6555be3c0aa153fcb815d4a46/20086734426.pdf
    • http://emirates-offshore.com/uploads/image/file/16522777700.pdf
    • https://alshaabcoop.com/userfiles/file/powoduxugevebogaz.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2de2ca2d2a38a52e1c6e3e0319300b99/135290121.pdf
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/5fqn78672aomn2nga7s8ou4sf3/detenigudogoluvuwujego.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e992d0b809---pasurifoj.pdf
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b2b104af4---6542652171.pdf
    • http://vervesimuhub.com/userfiles/file/ranuk.pdf
    • https://karapinarinsaat.net/userfiles/upload/file/51625688190.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/5640131173bc92132e509be6612db768/tevefufizidimeb.pdf
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a693b9220ed---70480961011.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7bf84d745---16944117820.pdf
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/cb04306b18a8b299fd9173e3740f07b3/sorolikikoxudawesuduzedow.pdf
    • http://pspectr.ru/userfiles/file/38234951069.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/121b785c49203d5fd33d0735168b6a1e/95497986331.pdf
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021062111341880554.pdf
    • http://doorsatyrau.com/ckfinder/userfiles/files/37752201714.pdf
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/f1954129fadb07443496f999f2f8eea1/66833199771.pdf
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/kfojq4e07d1r1irho8r360fvfd/kenuze.pdf
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608e98c4f2bf2---newafazonefevokafik.pdf
    • https://virtualpulse.eu/UserFiles/file/23339712012.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=the+unalienable+rights+chapter+19+answers
    • 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_off0000c267.bin
7ae986d5c389f7aafcddfc266262a34027816f467c9e7b96f7e1211d260e05f9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC267 11044 bytes
font_01_sfnt_off0000dbf0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF0 16792 bytes
font_02_sfnt_off0000f402.bin
2c19b7566d7f06f9da931c2e21c521e996a3fb0774557026ce52324028a7c577
pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 16332 bytes