Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc34216a81e62154…

MALICIOUS

PDF

84.6 KB Created: 2021-08-14 23:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 2d03a0d384d4aaa7c675d3f83fdd6128 SHA-1: ab86e21e4bee91aa643a670209899b5f046890e7 SHA-256: fc34216a81e62154dde6417f275e99ebee92b6270c22bd9d5d5e0dbb5f0139ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5273

Heuristics 5

  • 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
  • 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://phutungvespaco.com/luutru/files/37514851248.pdf In PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a705cace840---40211456634.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/tavusonefox.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/30884fa24241f60657a1cc341ae954c8/nixojumezutunofom.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/80602093892.pdfIn PDF document text
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/1d89c5e933655e7d862fca9b2e3358ad/96051583684.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/37765826868.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/dupowidexifofarewewixo.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/4ebd5fac9f7351ff732dfc1e424f735d/27290730139.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/87m07pksui67f8j1aitvc1b352/pabefo.pdfIn PDF document text
    • http://footstepfloor.com/upfiles/files/5296786668.pdfIn PDF document text
    • http://ventilatoryzlin.cz/images/file/31735412821.pdfIn PDF document text
    • http://steelfurniturecn.com/d/files/9925381792.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/3ee047f36d65f37e6d6403d8d5f76a63/pogosakubamej.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/webexajum.pdfIn PDF document text
    • http://yucehukuk.com/resimler/files/39407663679.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b82af7d506---60357410947.pdfIn PDF document text
    • http://10glazsikeyrosa.ru/file/guxafiwabosuvegowejimo.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/vrmsi1nm9m33n5v1s599q6ja5d/saxevol.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51446277993.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/27775224647.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/56880777028.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=launcher+ios+14+mod+apk+7.2.5PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE8 11284 bytes
SHA-256: 8b6b295d6906e5752db91a8b7dece1010c5370e129f5815bdd5d7660cc7b3783
font_01_sfnt_off0001355f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1355F 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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