Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df389d990e81f6a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-11 23:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87509a8406db0025b2fef43bf06771ca SHA-1: cf951d4970f69094c9e537855b4c7afb88fb549a SHA-256: 6df389d990e81f6a4c586bd7b10860f69009c3f38644d356cbfd657a3ba34c05
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, disguised as a customs declaration form. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=china+customs+export+declaration+form+pdf In PDF document text
    • http://files.mollywinter.com/uploads/1/3/2/8/132815050/d35ae.pdfIn PDF document text
    • http://rudar.universalpatches.net/uploads/1/3/1/6/131607062/bikajeguzimosenipune.pdfIn PDF document text
    • http://files.aera100.net/uploads/1/3/0/9/130969154/2275ffc.pdfIn PDF document text
    • http://files.cveducators.org/uploads/1/3/0/7/130775145/rotevogumotujow_bibazuzeju.pdfIn PDF document text
    • http://files.anastasiasmitharts.com/uploads/1/3/2/6/132695574/e05a6fabae054.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/1/0430/6888/3097/files/30166076130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/40336681469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/56649733702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9080/8737/files/nujapoxamilawazeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1088/2727/files/37811756016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/augusto_roa_bastos_cuentos_completos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0188/7396/files/59131865835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9327/6312/files/passover_haggadah_hebrew_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/mysql_safe_update_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/marakaligomuban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/lomazejakepi.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_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 5368 bytes
SHA-256: 5105e9d0fe9ac388660e856cbde795b242601a0f4634a0911b025793c166caaf
font_01_sfnt_off000076cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CF 10428 bytes
SHA-256: c2cae6e7986c2f942e7e8793ba2d7e6e19f1d0e8b39f273088c7a60304d22c02

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