Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d220e11f5bf1c92…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 14:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: caa9c8bca1e7915b05442a8f4030b330 SHA-1: fce3f7d8332e624e7ad81d9660139127750708a6 SHA-256: 7d220e11f5bf1c92f6bb3b520157c2e953c2db1e1cc789907a16a2f245b97252
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The primary URL points to a keyword-related search result, suggesting a lure to attract users interested in specific content. The document's structure and numerous external links are indicative of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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://pelibifir.ru/wb?keyword=yogasana%20books%20in%20kannada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455174/normal_6029082841678.pdfIn PDF document text
    • https://takatika.weebly.com/uploads/1/3/4/6/134605824/jaxideg-jexevu.pdfIn PDF document text
    • https://juxibawazorar.weebly.com/uploads/1/3/3/9/133997202/98a717b9b.pdfIn PDF document text
    • https://bawidonawasaz.weebly.com/uploads/1/3/4/3/134354070/zovoxetitewowib.pdfIn PDF document text
    • https://nutiniwe.weebly.com/uploads/1/3/4/8/134870290/6222609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458631/normal_5fd82a086b174.pdfIn PDF document text
    • https://sisareses.weebly.com/uploads/1/3/1/4/131454440/zarejogelukixixane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476148/normal_5fe96f96608bc.pdfIn PDF document text
    • https://bojufare.weebly.com/uploads/1/3/1/0/131070992/3147550.pdfIn PDF document text
    • https://punujagenak.weebly.com/uploads/1/3/0/7/130775029/9462428.pdfIn PDF document text
    • https://gorogonib.weebly.com/uploads/1/3/0/7/130775466/pomuroratamufef_tefigo.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/sunitawi.pdfIn PDF document text
    • https://dogeremezirezar.weebly.com/uploads/1/3/1/3/131379343/2605675.pdfIn PDF document text
    • https://ruvezidarumova.weebly.com/uploads/1/3/1/3/131380493/jiduj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421627/normal_6022e74d38fe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455670/normal_5fe7c6b69a2c5.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000df5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDF5C 4076 bytes
SHA-256: 052cfed8ef55c44d35da9ac83048ed158c829da973bd7ec8b106e6ff3aade1c2
font_00_sfnt_off0000ce27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE27 5032 bytes
SHA-256: 4e4f2247a2eb442e6c1e52c8a1e141afd4089a2bab84eca9e5c7c4c8b1436af2
font_02_sfnt_off0000ee54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE54 10556 bytes
SHA-256: 1daa221ffef7d1743326df72330e45a9167744701c4f10157bdc3ca194f33ff5

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