Malicious PDF — malware analysis report

Static analysis result for SHA-256 8281d8cf07738661…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 18:43:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e65589e276cf6353c811861f6dfe6ef SHA-1: d49591839ddeab826ffb48690a92ccc908dae118 SHA-256: 8281d8cf077386611caa0089b11200c1a1f756b7807fe7bc0fa9766954404fcb
194 Risk Score

Malware Insights

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

The PDF contains a lure related to video game cheat codes, directing users to a malicious redirector URL. This redirector likely leads to a phishing page or a download of a second-stage payload. The presence of numerous external PDF links suggests an attempt to create a link farm for SEO manipulation, potentially to improve the ranking of the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=cheat+code+of+gta+vice+city+pdf In PDF document text
    • http://files.dyw-edinmideast.com/uploads/1/3/1/4/131454270/bc8986b.pdfIn PDF document text
    • http://files.allaboutkidsdaycare.us/uploads/1/3/1/6/131607075/654311.pdfIn PDF document text
    • http://tonusot.sardonicpoet.com/uploads/1/3/1/3/131398091/e19ecdf76a617bf.pdfIn PDF document text
    • http://files.authoramyrichie.com/uploads/1/3/0/7/130740323/962638.pdfIn PDF document text
    • http://files.eduexchange.org/uploads/1/3/0/7/130738593/4b237647fe45cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/94000929718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/pudabuxep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/tumazumemib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/64014909938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/xavusogevuteterinetage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/gexutumivujemugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8941/2764/files/xewabikamivumepuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/vixezesaxakefopubefajiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/ti_84_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/wizifaronasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/35097557769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/52251859525.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_off00006fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD8 5180 bytes
SHA-256: acbb671279c299c065ce99d67d3606a94280de10b5a8e6ff74380a5d078bdb05
font_01_sfnt_off0000818b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818B 10144 bytes
SHA-256: 51358c14672538bdb083a83999887ef46daaf59f2ae36d7364cf65a461e1880a

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