Malicious PDF — malware analysis report

Static analysis result for SHA-256 7305ff3fffbee5d8…

MALICIOUS

PDF

63.6 KB Created: 2020-08-03 14:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dabfd39215fd757d5003f31bd8d3e150 SHA-1: e445a98eacfc158016d3a78b99f30f417a7d2e13 SHA-256: 7305ff3fffbee5d8735e889b65e3c62799d050a6dcd99deafbeb5905f2a78168
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a document body that, despite being heavily obfuscated, includes a URL pointing to a known malicious redirector. Heuristics indicate this is a link farm designed to redirect users, likely for phishing or malware delivery. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent.

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=consequentialist+ethical+theories+pdf In PDF document text
    • http://files.visitwesternheritagecenter.org/uploads/1/3/2/7/132710601/rediruj.pdfIn PDF document text
    • http://files.averagejoeministries.org/uploads/1/3/1/6/131636725/sofepurotavamiduxi.pdfIn PDF document text
    • http://files.jeffreyprimeaux.com/uploads/1/3/0/8/130814219/rujidedepel.pdfIn PDF document text
    • http://files.qtdinternational.org/uploads/1/3/2/6/132681767/7364064.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/1/0430/4633/8709/files/30269443728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/46037063262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/24664728424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/kokelezexemijusobenarire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2089/files/western_union_hacked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/92449987593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/33976889950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/kovoketasanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/naropikokakumunupusomaxax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/91619720573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/jcameron-_key._asc.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 5

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_off0000bba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA6 5272 bytes
SHA-256: 14b506a00039968d735f5d0ad34bad6b8c3fa8dbaeafd3275ecb74316ca89151
font_01_sfnt_off0000cd88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD88 10656 bytes
SHA-256: 38d17c30b7e9cd34db443901ae930874a5867727b8fd432b0dfa19d63778c364

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