Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc3948ab9d42ec7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-05 11:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ef6ed87b2a33e6df5fce84ae16e7ca1 SHA-1: 49b1255106ac494461788f124ee1c7f2cee7e67f SHA-256: 6dc3948ab9d42ec715e78839bd537da9e046d610c6aa7d040ad147d39d496fcb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector, suggesting a phishing or scam attempt. The document body and heuristics indicate a lure for a 'free PDF app', which redirects to the malicious URL. The presence of a link farm and redirector points to an attempt to drive traffic to malicious infrastructure.

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.ru/pify?keyword=best+free+pdf+app+for+ipad+pencil In PDF document text
    • http://files.freddiesfootprintjersey.com/uploads/1/3/0/9/130968968/ab49e69037da15.pdfIn PDF document text
    • http://files.nod-production.de/uploads/1/3/0/7/130776118/3864674.pdfIn PDF document text
    • http://files.louisemaloof.com/uploads/1/3/0/7/130739379/fuxanebiwuzaved_zavomefixeb_gizazun_tiloduvo.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/1/0433/0687/7080/files/dosodasanofesawule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/5995/files/52262049079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53551688275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/arduino_uno_r3_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/71088465349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/wivuxufanokimijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/keletezemapokojuwerer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/zuvek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/botonetexikube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/hey_there_delilah_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/gukiwusat.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_off00006a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A82 5200 bytes
SHA-256: 4909a2b7dabda2964a4c211d5de29d9cfdb6635ebb613ba2388b269f9424588f
font_01_sfnt_off00007c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 10024 bytes
SHA-256: 99374621a2711aa361633a9deb26d42640a925973a34f9c61c2f68ae666cbf47

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