Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc143d42e6530ff…

MALICIOUS

PDF

44.7 KB Created: 2020-08-19 11:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a11b7df340fe53f322350b57cddf9e9 SHA-1: 42496cf3e194efafda42dfabaf143411b52fff2b SHA-256: 5fc143d42e6530ff92f454023cbeb9046e574531b90432d158f6b5923bbf94a1
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. The presence of a link farm suggests an attempt to distribute malicious content or phishing lures.

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.cc/pify?keyword=kbc+question+answer+5+may In PDF document text
    • http://files.portabletoiletsmichigan.com/uploads/1/3/0/7/130775304/3ed70.pdfIn PDF document text
    • http://rapeza.bnhlivestock.ca/uploads/1/3/0/7/130740221/wokixuvobevovexes.pdfIn PDF document text
    • http://fipir.actorportrait.com/uploads/1/3/1/1/131164250/7385295.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://cdn.shopify.com/s/files/1/0430/8451/3434/files/sudaxetavaxofowujedavuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/sql_try_catch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6769/4501/files/ninikomejudewonukeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9121/files/22601868301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/melokujawexovuganikorav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/31928738492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7103/7855/files/kavakuwobavegani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4291/9832/files/6729490812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/xoporovojazuzenowoweji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/inquisitorial_and_adversarial_system.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 3

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_off0000619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 5348 bytes
SHA-256: a8b668d89e1cac5e23e7ad761fdf20943611fbcfacd759149209148baa152207
font_01_sfnt_off000073d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 10652 bytes
SHA-256: 89bc2511cfa862d9897c25ff876079447ee54ca852ba93e6053c12ff2f52ce77
font_02_sfnt_off0000983c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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