Malicious PDF — malware analysis report

Static analysis result for SHA-256 2317d6cb36b2fcfe…

MALICIOUS

PDF

42.2 KB Created: 2020-08-21 10:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb08d22f9750208d633e3007a472bebe SHA-1: 80231d28dfc000d340c636680c3459e76314de7e SHA-256: 2317d6cb36b2fcfed7e84a52712e58a4d45fec4d44559a9084304ed9b38a31e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. Additionally, it features a large number of embedded links to external PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text along with the primary malicious URL, indicating a likely attempt to lure users to malicious 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.cc/pify?keyword=medial+cuneiform+injury+symptoms In PDF document text
    • http://files.centralvirginiapickleball.org/uploads/1/3/2/6/132681192/7483424.pdfIn PDF document text
    • http://files.emasullivan-bissett.com/uploads/1/3/1/8/131871390/mipujofisodut.pdfIn PDF document text
    • http://files.vybephotography.com/uploads/1/3/2/7/132740214/d5e1a9c9f5b.pdfIn PDF document text
    • http://files.westerndubuquefootball.com/uploads/1/3/0/7/130776327/a7918f907b.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/1/0431/2511/2994/files/davis_drug_guide_insulin_glargine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/balunobabeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/anatomy_and_physiology_study_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/68837183112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/arundhati_tamil_movie_isaimini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/zoxozabipiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/75298410966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/gawawozijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tifomev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/nothing_else_chords.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 1

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_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 5484 bytes
SHA-256: b0b8b48a1876af514ebf3ae85a09689afecf454c10dd1899f6fd137e7444f2c2
font_01_sfnt_off000078e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E5 10280 bytes
SHA-256: 5c283fdd746af0d25765cf702369deb36b0c5bf3656f19578e3a603d4a7b34de

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