Malicious PDF — malware analysis report

Static analysis result for SHA-256 078c3873f9a78e84…

MALICIOUS

PDF

118.0 KB Created: 2020-08-06 12:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c29e9f8230fc70defd099d14cb1bf4e5 SHA-1: 7e6a03a7855e704974c9eca2743aa508cca50a69 SHA-256: 078c3873f9a78e841d81461bdd80a81fcd2c0bb8482be753d287c67bd46ad22c
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a suspicious URL (https://ttraff.com/pify?keyword=assembler+directives+pdf). The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous PDF links further supports the SEO link farm heuristic, indicating an attempt to drive traffic to malicious or deceptive content.

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=assembler+directives+pdf In PDF document text
    • http://files.oleanderpress.com/uploads/1/3/1/6/131636642/mugonebod-guwijebufi.pdfIn PDF document text
    • http://files.velez.com/uploads/1/3/1/3/131398100/1500944.pdfIn PDF document text
    • http://bodumavop.bloomstudioandgifts.com/uploads/1/3/1/4/131406390/e9c72f.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/1/0450/2755/7526/files/abjection_and_miserable_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/boss_me_80_owner_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/sopobato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/kozufapotomamunosiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8852/files/81427437195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/73501195806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0238/6856/files/what_does_nsfw_stand_for_on_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/nuvarepunimivusumune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/21297065178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/28516292422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/77565491683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6464/6042/files/87827131200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7742/7609/files/kidigixaput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/2988451359.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 4

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_off00018790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18790 5280 bytes
SHA-256: 08da33a808f2fb76ab8dadf56de9c8675d058ab04d7b1e3a53a9adecb8f889de
font_01_sfnt_off0001996f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1996F 15496 bytes
SHA-256: 97e7be536551391eb8012290dba9fed23dc3a90fa393d3d642add0a69841aaaf

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