Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a42c3c38e580f52…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 09:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e6cd485a7f6fac539613e14c05a2540 SHA-1: f9d8b41fb5edea4425198ca177ab9cb90b641e5e SHA-256: 4a42c3c38e580f52f41115bd22f82d5c669cb84a9db6ceef90a4cce9e8d1a134
194 Risk Score

Malware Insights

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

The PDF contains a deceptive message suggesting a problem with printing, which is a common social engineering tactic. It embeds a link to a known malicious redirector, ttraff.com, likely to lead the user to a malicious payload or phishing page. The document also contains a large number of links to external PDFs hosted on various domains, including Shopify, which is indicative of a link farm or SEO poisoning attempt.

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=sua+loi+file+pdf+khong+in+duoc In PDF document text
    • http://files.gnslasvegas.org/uploads/1/3/0/9/130969001/tulumot-jugoz-tukuwivi-dodal.pdfIn PDF document text
    • http://jofoz.annascafebar.co.uk/uploads/1/3/1/8/131857334/nerikizowepibavuliv.pdfIn PDF document text
    • http://files.chapinmarino.com/uploads/1/3/0/8/130813663/b75a82.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/1/0438/3696/5026/files/vysor_chrome_app_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/aeroporto_bologna_destinazioni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/letters_coloring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/foradenemazife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/admission_form_aiou.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3319/6706/files/terevogonurapewezuboxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/staight_outta_cashville.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/business_plan_sample_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/generation_z_characteristics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/76342839913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/overhead_door_model_2026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/bubenikijoxapuzazipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4234/6907/files/ditusemaxotasodoriwizibu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59AC 5308 bytes
SHA-256: 882c84fde5296da04d74b960a7f39e199ce80177cb71e58992e3ecffb9f63763
font_01_sfnt_off00006bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBE 10080 bytes
SHA-256: a7e78649eb55c0724dddd911081cdd04eb1c16480cf3da03ce05a6210f4c0b89

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