Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6e7576ad128c97…

MALICIOUS

PDF

75.6 KB Created: 2021-02-03 01:58:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b425df1f7b462f5217ea246af6ad19f7 SHA-1: ebe8d2675fae9062b52f6047abd6f81f06d7e1a1 SHA-256: 6f6e7576ad128c97e9d0d3ce7d070303ed38c011b82e55887a99e1b305670528
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9083

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yafferge.ru/aws?utm_term=ipod+shuffle+4th+generation+quick+start+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4492257/normal_5ff2812ac7d2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466666/normal_5fe1d8aedd5b1.pdfIn PDF document text
    • https://donabetolemi.weebly.com/uploads/1/3/1/6/131637402/78861f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471703/normal_5ffb7cf8dd6bc.pdfIn PDF document text
    • https://murexaxinafol.weebly.com/uploads/1/3/4/4/134456221/wusigowamasakuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd6485605ff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_6018ee1111f3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447663/normal_5ffac6f98e7f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383451/normal_5ffc9dcc891ec.pdfIn PDF document text
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/nalesitawagol-fovaxoseval.pdfIn PDF document text
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/cb8ee4111c11e0.pdfIn PDF document text
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/daadec30c1923.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/fofeguj/co_parenting_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/avengers_endgame_blu_ray_4k.pdfIn PDF document text
    • http://pemukusa.epizy.com/migosedalikerejego.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/jidufudoni.pdfIn PDF document text
    • http://raseloxezonavo.epizy.com/99870765788.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/geometry_polygons_worksheet_grade_4.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 5560 bytes
SHA-256: 8e93e33b9767030e3b2af315c0c11ef7b4339582f6c289844ab99c558445c61d
font_01_sfnt_off0000f879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF879 5516 bytes
SHA-256: b3eb9a9584c5ea84f7a78e5a9c76fcd94d972e07db418dd65534779bdf86f6e9
font_02_sfnt_off00010b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B27 5972 bytes
SHA-256: 1b62f3e0e9f3b36faa3cc4782891da307373f387d8bb5664c7988a126f27c7bb

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