Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ecdc7ce174d4c27…

MALICIOUS

PDF

74.2 KB Created: 2021-05-29 13:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7bb755fd4f69bf679893b0882c2b465b SHA-1: f5c11ad4320042dbf9d26a81e631bdc9dd98e138 SHA-256: 5ecdc7ce174d4c27b5b30667b73abf0c891226a74b3342dfbc46c96f8a110708
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.8022

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.
  • 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 https://crophysi.ru/strik?utm_term=ews+certificate+application+form+pdf+in+hindi PDF link annotation
    • https://dekoreriso.weebly.com/uploads/1/3/7/5/137501726/d57590df631ba70.pdfIn PDF document text
    • https://jibeguviju.weebly.com/uploads/1/3/4/7/134723477/dewibotof-vovikatos-wuzizovara.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470540/normal_5fdd5dc1325af.pdfIn PDF document text
    • https://ruvazokof.weebly.com/uploads/1/3/4/0/134040659/d65fc2d6b9fc.pdfIn PDF document text
    • https://gesaleku.weebly.com/uploads/1/3/4/6/134694927/pupanosub-tujokemimodu-jufupuposomupev.pdfIn PDF document text
    • https://nefotinabe.weebly.com/uploads/1/3/5/3/135314884/biwodelax-gofosefa-nixakiganuwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370791/normal_600177cd7f237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489414/normal_6049aa6034258.pdfIn PDF document text
    • https://kabuzelegogem.weebly.com/uploads/1/3/1/4/131453274/paxukavubuw_nuluwuvi_sixiwelidekum.pdfIn PDF document text
    • https://gugajapu.weebly.com/uploads/1/3/5/3/135330564/716272.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_5ff70b6730f81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_600fab5d62b18.pdfIn PDF document text
    • https://tomudonaki.weebly.com/uploads/1/3/4/7/134715401/025d3a.pdfIn PDF document text
    • https://fekukutetixamam.weebly.com/uploads/1/3/4/6/134636283/2700440.pdfIn PDF document text
    • https://wezawelo.weebly.com/uploads/1/3/0/8/130813956/682879502.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/8463064.pdfIn PDF document text
    • https://xixafaxuxux.weebly.com/uploads/1/3/4/3/134340403/bedoloxegolokabokaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/22f86879-a6e4-4f12-94f6-8418a85139ad/72221746590.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c8758a-85a4-4b8c-acf4-3abc123537b5/english_language_courses_for_adults_in_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa1bced-2773-406c-a897-b1c7644c45c3/thank_you_for_your_fast_response_email.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9064a6-62f1-4633-9dca-25d45c9378a4/80643562340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a01e283-ef34-4722-9861-d04fdff0a60c/80781781106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226b18a9-a022-4b7e-b9f3-05edf7cfed40/nazit.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBE 5444 bytes
SHA-256: c1a10530b459a7064b1864710fac17d31946a981177660dceb50b3e6b839e2a9

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