Malicious PDF — malware analysis report

Static analysis result for SHA-256 02171f3dd7af0df8…

MALICIOUS

PDF

50.8 KB Created: 2020-08-19 00:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63b4947adbec1671e7a696fcb9db9154 SHA-1: 226f71ac853aeeac75ec6e3d8ca0e43264c92d5d SHA-256: 02171f3dd7af0df8b3fad8810ce7e1fa2dad9aadf2d7b4ae5e457588797f9b2b
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text that direct users to a malicious redirector, disguised as a document about "M s word 2007 questions and answers". This redirector is part of a link farm designed to phish users. The ML classifier strongly indicates 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=m+s+word+2007+questions+and+answers In PDF document text
    • http://laneka.womenforearth.org/uploads/1/3/0/7/130738720/8472892.pdfIn PDF document text
    • http://files.tcnorthwestbaseball.com/uploads/1/3/1/6/131606056/dotigamapijomesivom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/namizumagogiwemeveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/88627442638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/bhagavad_gita_malayalam_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/qualcomm_atheros_ar9485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/robikezelafakopiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/pofugewefekazeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/domesanudalikakobinej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/three_days_grace_setlist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/kilo_to_lb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/43589638405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/76677596416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/likert_scale_data_analysis_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9528/8984/files/camtv_dish_network.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/22736120140.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 5248 bytes
SHA-256: 8e821e6bfab5b796b1a5dcd5b3e1b6f730c70d86db351bc622c5743f96478c2d
font_01_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10824 bytes
SHA-256: 2fec559b8cf30dab9dbfc5332b7d891a4c318e714bebb942a2d5d35e95cd80e7
font_02_sfnt_off0000afb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB0 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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