Malicious PDF — malware analysis report

Static analysis result for SHA-256 1958b40842c5fc54…

MALICIOUS

PDF

48.0 KB Created: 2020-08-25 03:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 233197e365421f8b91e8d224ac952f11 SHA-1: bc09abea9f1486b44865af75e782dae8c17b9f6c SHA-256: 1958b40842c5fc54ba51db008bd091e380511b2f87b2daa290d95468ad29e2b0
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for distributing malware. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a phishing lure disguised as a build guide. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector link confirms the intent to lead the user to a harmful destination.

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.cc/pify?keyword=huppermage+build+guide+wakfu In PDF document text
    • http://kubinavi.bigfootodyssey.us/uploads/1/3/1/4/131482975/zefutamidoru_fifamon_jagalogugokube.pdfIn PDF document text
    • http://xakide.simpsonchorus.com/uploads/1/3/2/6/132696067/2978f697de79.pdfIn PDF document text
    • http://files.tropical-valley-foods.com/uploads/1/3/1/6/131637841/giratifekirinixaba.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/1/0437/6982/3383/files/hedging_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/vekuzavul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/nekiwak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/72713575613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/zokav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6336/9882/files/xenusijemidivosodeguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/application_of_genetic_engineering_in_environment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/53048579219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6683/5352/files/85198493425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/preeclampsia_treatment_guidelines_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/vebulekizesasopigekoz.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_off00007cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC0 5440 bytes
SHA-256: 968e3086c8147fc26bbdb2e0ea4f36384ad8b5634ba16aad0315bc87cf31e9ff
font_01_sfnt_off00008f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F38 10596 bytes
SHA-256: 3f0731da1cb61b91f3894b160c533f6d8e6dfad0e47f96f182af1f52ba087d5c

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