Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b8c1397afbd344…

MALICIOUS

PDF

49.4 KB Created: 2020-08-24 16:24:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 371fbad152eb1373d2603c95984b22a3 SHA-1: 70056b4293227ec8f8275f64fc552fa9becd8334 SHA-256: 42b8c1397afbd344a3d3e3d8b01196f5678400216bbe00ebb5d02a1070432d56
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc'. This indicates a likely attempt to direct users to malicious content, possibly for phishing or malware distribution. The document body, though heavily obfuscated, contains the same title as the malicious redirector URL, reinforcing the lure. No scripts were extracted, but the PDF structure itself is used for the malicious redirection.

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=sar+of+antifungal+drugs+pdf In PDF document text
    • http://files.esproductions.net/uploads/1/3/1/3/131379833/vekadubonilanotova.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/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/37492045468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/the_creative_process_illustrated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/fewerojokafufafaxafome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8515/1897/files/94421464873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/install_android_auto_on_2016_mazda_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/93798830076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1955/0370/files/39693975792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/bozaraninokemuxopa.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 2

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_off00006dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 5076 bytes
SHA-256: 332f5b031fbd9b09a2466734ff67b1a30b014b29aef1519210aecca00b92dd6c
font_01_sfnt_off00007eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEB 13168 bytes
SHA-256: 846e91464b0b7f7f2e9f113d08b0388bd8314cb9d1d428f6fb088674ff7e1c9f
font_02_sfnt_off0000a8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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