Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f71d8896fd1ef0…

MALICIOUS

PDF

39.5 KB Created: 2020-08-20 02:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75146196facd25f06d9e0f1c2fb44edc SHA-1: e8b4d82b3f9eef9684c2df69d041d0984aff903d SHA-256: 03f71d8896fd1ef0f65f6e23377300649db139ff2382b08c957b8197c3c23a43
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, suggests a lure for 'free practice lsat questions with answers', which is a common phishing pretext. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL reinforces this assessment.

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=free+practice+lsat+questions+with+answers In PDF document text
    • http://lizalal.rachelhenson.com/uploads/1/3/1/4/131453960/wimupibixozotet.pdfIn PDF document text
    • http://files.thevolunteerclub.com/uploads/1/3/0/7/130740213/tamatitesipiwax.pdfIn PDF document text
    • http://xuvenoxib.standrewsweb.com/uploads/1/3/1/0/131070722/tiwepotojuze.pdfIn PDF document text
    • http://files.txheartlandins.com/uploads/1/3/0/9/130969148/72095b057f1e3.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/1/0429/9869/4042/files/static_gk_capsule_2020_ibps_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3077/9816/files/vawamipamuxizenavewolafuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1336/files/5372838315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/11794048211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/57979232039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/26217157337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/34081833673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/13287952659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/english_grammar_for_5th_class.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4710/5191/files/kekizigibovexitetetiwiw.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_off00005cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEC 5192 bytes
SHA-256: a361aba30fd00b81593a315d78ca1c6d7c1a27cf096e34de4ccc2ed6dc45d3ad
font_01_sfnt_off00006ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA3 10128 bytes
SHA-256: 1be0d4e19ebacc9495d59a26d01536cadff2669e43f089add278883b687accd3

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