Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d29f8569178b0b0…

MALICIOUS

PDF

91.8 KB Created: 2021-04-28 17:36:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 629e3580080cd24cc2a4b986c6a45114 SHA-1: a1e5cb64165e55c4ed46672011092850f15944a5 SHA-256: 0d29f8569178b0b0baa70d1a0c53805fe91003f503c9e5bcb539579747c349bf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of embedded URLs and the nature of the link farm suggest an attempt to lure users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8221

Heuristics 5

  • 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
  • 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.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16074dbee0767f---vigumonelezulekoweb.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c987f5c89d---misagoluxebagijopezozuwo.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/9eb570f827236c61c215381edf9bb6a1/zuvidugijow.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868739d6368---77736099613.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16074d7461cb73---kefidulumuki.pdf
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/ccf17a51fb4019e1f32d10126504384c/48138181830.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607debc569678---mamikup.pdf
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160781e8b5d9e7---lirivitokep.pdf
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/f52d1a5fe3211544cd439833068d2836/92858911158.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9fce985a688652aacfbb2b3d6203c20c/51793405035.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16088ebfcc5efb---51146646645.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607a06419d65d---pomajip.pdf
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/ad7a09017921da942d191c4dcb80e534/63722620983.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079dcf0a1ebb---17491339296.pdf
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/muquajeaigtb8ksrklb47rvb1r/xunakexoxu.pdf
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/fe2824d3c3630bdd8c828b09b0176eaf/xipezubebivilefimifodone.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/d25ba43a8ab1a27ff1ad48da2de52723/sunenetikesawewenugo.pdf
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607235c2b9c36---javuzuwininuzorife.pdf
    • https://terryhaas.com/wp-content/plugins/super-forms/uploads/php/files/55e2370ee601d76280869d93f1465c4f/kekulumukinovo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=believe+anthem+music
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000140ba.bin
603b1ba4ea3f602b32ae979b3ca0100d5d7f0ef3ac1e9cc5c331c3f737aa3d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140BA 4824 bytes

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