Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff581fc470e1325…

MALICIOUS

PDF

83.0 KB Created: 2021-01-14 09:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0a651dcfa3f6d8968cc86ca46085891c SHA-1: 8725b3bf41aec60a7ac60d92e272a461a8d7b0d0 SHA-256: fff581fc470e13259c7b323857b0a164de56f2b778112a03933e2aa368f66a54
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors and link farms. This suggests a phishing or SEO manipulation campaign. No scripts were extracted, but the presence of numerous malicious URLs indicates a high likelihood of user redirection to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://gettraff.ru/123?utm_term=baby+corn+plant+images In PDF document text
    • https://bewabolome.weebly.com/uploads/1/3/5/3/135347927/lebufobofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381738/normal_5ff7db8c5e296.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443292/normal_5fd32719e0a23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414682/normal_5fbc03789ce83.pdfIn PDF document text
    • https://juvuxoxeziw.weebly.com/uploads/1/3/4/3/134313380/nevexujerak.pdfIn PDF document text
    • https://site-1083549.mozfiles.com/files/1083549/pilogunobevog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368467/normal_5ff001ffa4584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447884/normal_5fa349d4a011a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fukezavazuj/53484952321.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/fesupudonole.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/anthony_burgess_a_clockwork_orange.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/crackle_movie_and_tv_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 5332 bytes
SHA-256: 24ce136b882c96087fd4d8cc4647fbadb7cff6d397917e8e539dc710db330b8b
font_01_sfnt_off0001092a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092A 11416 bytes
SHA-256: 0da4a833db982d0e2fad1964116a483efbd56e4e29274b4e1e1b93645cde756b
font_02_sfnt_off00012fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.