Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b3f312638984c5…

MALICIOUS

PDF

72.8 KB Created: 2020-12-07 11:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 762a03a0846bffefde66894e356b15a7 SHA-1: 201700c41f0250a0ce668fa8843c84699331f717 SHA-256: 17b3f312638984c593a6ff5681c634d9dbc15d1a41ec160757918cb931b36ec2
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffnew.ru/strik?utm_term=sewing+machine+manuals+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fb5daed79652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488604/normal_5fc510153a008.pdfIn PDF document text
    • https://zomanuvid.weebly.com/uploads/1/3/4/4/134477829/lepavupof-suzewitisigit-lideboxedutazan-viseruxolukod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3696f7848ba205d2893e8/t/5fca0bf74e3f3d251741ea1a/1607076858270/1064773315.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c49217e72026400b6e23/t/5fcd423174a40730fba5ef20/1607287346431/97736669810.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/xesidewogiwosudaruvo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a3195e8e827d4299026a/t/5fca72afe462045bd0f33d36/1607103152510/69530127098.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50e73be9b693951259378/t/5fcb6723190ee82df8dc12bc/1607165732915/cheats_for_gunblood_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc101f96609fd0ee791e489/t/5fc14256cb3e0f57717da0c7/1606500951096/besederifig.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/9520639034.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/woduvijefuzeputud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14748c89e1c4b8fc0f61a/t/5fc5575f7acac6192a736735/1606768482774/beamng_drive_android_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc178e33570fb44d13a6774/1606514917109/18013255773.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2740a2757459be2c9b8/t/5fc221f67acac6192a093dbc/1606558199454/50326126800.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn 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_off0000e092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 5312 bytes
SHA-256: 59f4d3355743e2488c4f6a3c3deec5deeb975b806faa91cf0cfd0d96b4d6da38
font_01_sfnt_off0000f290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 10440 bytes
SHA-256: cb21868d586d676046c2880a25a00e924a70451345d65be8e29cbe9a218f10b0

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