Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f051aebbd7e2ab…

MALICIOUS

PDF

40.8 KB Created: 2020-08-05 02:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98b8d5937800c61887ada78f8eda0af8 SHA-1: f3008bded786bb6ce18484f614acf1b751bca7ad SHA-256: 75f051aebbd7e2ab618723fa776ac5de308ab8d593051f0b2b97ef658d926279
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm designed to appear as educational resources, but the primary link redirects to a known malicious infrastructure. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to disguise malicious links as legitimate downloads. The embedded URLs are likely used for phishing or to distribute further malware.

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=easy+way+to+learn+english+grammar+tenses+pdf In PDF document text
    • http://files.adrianayogi.com/uploads/1/3/0/8/130813614/mewitovaje.pdfIn PDF document text
    • http://files.grandjetedance.com/uploads/1/3/2/7/132712115/2201ac35cc.pdfIn PDF document text
    • http://files.alex-kwon.com/uploads/1/3/0/8/130814588/zuteso_xebesol_laruforutulaf_xilumivaxaxugon.pdfIn PDF document text
    • http://files.riceisfordinner.com/uploads/1/3/0/7/130738988/b74e5a.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/1/0435/3723/6119/files/biology_question_paper_for_class_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6271/3754/files/tosuzixavogixekivoloro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19227598733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/emerson_coriolis_mass_flow_meter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/namitozaronibutomojuwami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/jiwipodatimamute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/71265181740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5459/6250/files/tavabepupenenese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/4264739000.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 3

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_off00006122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6122 5608 bytes
SHA-256: faf4615895e9b28b1d1ee80a05ee425af23e3bcdadd3e6f50c5d7afb07f86d4b
font_01_sfnt_off0000741f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 10024 bytes
SHA-256: f48b19e243e61ff7ce97acd5065f55c2e83ce8224a45a3d40d8ac4d8be752680

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