Malicious PDF — malware analysis report

Static analysis result for SHA-256 adad29853a77cbc5…

MALICIOUS

PDF

79.9 KB Created: 2020-11-25 11:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f9f010abd43dc7d18b67b93d5b2cbc6a SHA-1: 9d3264b4378459449c5a08d85e84660c31423925 SHA-256: adad29853a77cbc5837c69367c0a020bc54805bf3a8920c05a5a3f89d4631a14
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://trafftec.ru/strik?utm_term=notice+of+non+renewal+of+lease+nyc PDF link annotation
    • https://zovijewef.weebly.com/uploads/1/3/4/4/134400079/e276f4d7b7e4921.pdfIn PDF document text
    • https://bupigesow.weebly.com/uploads/1/3/4/3/134360728/malemikevazi_nuram_komewixe.pdfIn PDF document text
    • https://nusekaturorofu.weebly.com/uploads/1/3/4/0/134095869/nedogevopeziz.pdfIn PDF document text
    • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/8da45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f87c4b599952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466165/normal_5fb9a0641ac69.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/10821a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jagux/kawasaki_generator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/free_abstract_test_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/xibetujo.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/spider_man_hindi_comics_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/ubiquiti_uap_ac_lr_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/7914298238.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/kujubipaveju.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/kenneth_starr_vs_robert_mueller.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/kifojejodasomazovapusoreg.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_off0000fc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4F 5040 bytes
SHA-256: 6d9350128106375cc4a99663db99644ccab008f2a38245f23cba8bfb55adbc49
font_01_sfnt_off00010da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA4 10856 bytes
SHA-256: 84c67260c851a5ee5595f3b849d117e26ec1ceadf7af190c33b10ff236561020

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