Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a29a18544fd36b…

MALICIOUS

PDF

59.9 KB Created: 2020-08-07 02:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a47f34bdfc3e6c96dfbab2bd1fce5962 SHA-1: 6764c0e06023fc35fc8f326a71aafcf08ff537a4 SHA-256: 20a29a18544fd36b8ce96eceaed7b5189ac24ff06d8b158b3285ebc2c683e1c0
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=tatalaksana+atresia+ani+pdf'. Additionally, it exhibits a PDF link farm pattern, with numerous links hosted on cdn.shopify.com, including 'https://cdn.shopify.com/s/files/1/0437/1097/2056/files/41288370575.pdf'. The document body, though heavily obfuscated, contains fragments suggesting urgency, aligning with the SE_URGENCY_LURE heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=tatalaksana+atresia+ani+pdf In PDF document text
    • http://files.audaciouslifestyle.com/uploads/1/3/0/7/130738621/xusamagowes-suvixap-sabumisisinezo-zogabuvapafu.pdfIn PDF document text
    • http://perofemix.fbchurch.ca/uploads/1/3/1/4/131454106/pefutesopubavuzexo.pdfIn PDF document text
    • http://files.mariannezarzana.com/uploads/1/3/0/7/130739696/redulog.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/1/0437/1097/2056/files/41288370575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/didul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/les_miserables_i_dreamed_a_dream_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/zujefipobosonunuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/pixadulibixeniku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/13667739117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2561/2450/files/bametejifowavibedeguva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6663/9014/files/pefejobekafivexuvaxifiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/35644241789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9626/7165/files/bobilubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4166/4669/files/tin_can_seaming_roller.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 6

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_off0000ad58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD58 5048 bytes
SHA-256: bcd6a79cb923ddfee5e17d681c350d54814b7c6608df0d2daa58db21e04f1001
font_01_sfnt_off0000be8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8F 10632 bytes
SHA-256: d35e586c673a48b3030a5f0f19f3dfbc274e4aaebf8ce1e7ca08a7b770a04d25

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