Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e96319a57bb9447…

MALICIOUS

PDF

82.4 KB Created: 2021-03-17 02:57:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 22a124045b8edf0968394c56df4ead40 SHA-1: 53a8de26450106b52d1eb3f74616cb121d68043b SHA-256: 0e96319a57bb9447fa96b2c4d0a3935dfa3664e7455432d61da38c77c271affa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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 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://kuzutuzo.ru/strik?utm_term=how+to+use+bluetooth+selfie+stick+remote PDF link annotation
    • https://cdn.sqhk.co/zezinojox/rhjjahj/zaramagogitetijinegef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448124/normal_60304b00e3c38.pdfIn PDF document text
    • https://vidowenabep.weebly.com/uploads/1/3/5/3/135322196/93994b32f86d746.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460063/normal_6000be5ab04cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390068/normal_6023c215c8a61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5fc68377a3857.pdfIn PDF document text
    • http://ketadiets.site/gobubipugoridubunomelibijx2y.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/SGghlIZ/siren_beat_mp3_free_download.pdfIn PDF document text
    • https://judexesadizit.weebly.com/uploads/1/3/0/7/130738912/d3f90c86.pdfIn PDF document text
    • http://vovality.club/gagabc9xgh.pdfIn PDF document text
    • http://rebelliona.online/jisidunosa22s9f.pdfIn PDF document text
    • https://toxilitabosi.weebly.com/uploads/1/3/4/4/134495834/a702c3e296e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_603b5173af855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_6031904f1f489.pdfIn PDF document text
    • https://gidaxejopof.weebly.com/uploads/1/3/4/3/134305554/pimup.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/sylwjcd/24354590500.pdfIn PDF document text
    • http://1eyvgo.xyz/what_causes_middle_ear_problemsnyeuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378604/normal_6009503639993.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/u7tifAs/56038140407.pdfIn PDF document text
    • https://goradexajegofip.weebly.com/uploads/1/3/0/8/130874122/nixatuwijomo_nuxejevez_lunafujaxudusum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e9542b43-fb79-4c62-94a9-c66526381fce.filesusr.com/ugd/4142f3_8edcf983e98e4e358c8fc59b2b799b87.pdf?index=trueIn PDF document text
    • https://4c982f7a-b72b-446d-8c7a-5e2d6818c0db.filesusr.com/ugd/519a61_2c834b37237442ea94a7a02bbfd5a481.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001052f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052F 5168 bytes
SHA-256: 4823ea947df19bb469b8b378391a1dc6f69504d38690b65f8339d9dfecac1b8f
font_01_sfnt_off000116af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AF 10960 bytes
SHA-256: 77450b6f5b432238e1a90bf6f6c7a28b15e64c310ccd622cb86a4165ac8ddd7e

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