Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8008febdbd696b…

MALICIOUS

PDF

42.6 KB Created: 2020-08-11 20:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 187197ef4b213b363b00da14da812c07 SHA-1: ba25503d3b9f03c45b2bc40f64d9ea3f38dc9b3a SHA-256: 4b8008febdbd696be680719f5b8ed7069bc60b552a49aae0d831c1f1ec211471
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one to a known malicious redirector at ttraff.com. The document body, though obfuscated, includes the target URL, suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or SEO spam. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=respiratory+system+and+artificial+ventilation+pdf In PDF document text
    • http://files.qualitylifeforum.net/uploads/1/3/0/7/130738513/setumowiz-fuxumu-koxitobofifof-gomovananenevi.pdfIn PDF document text
    • http://pomilibuj.tulsamusicals.com/uploads/1/3/1/3/131379246/folugigurogupu.pdfIn PDF document text
    • http://files.homilytools.org/uploads/1/3/1/3/131383838/wizitobegurafumefek.pdfIn PDF document text
    • http://files.scarfitup.org/uploads/1/3/0/7/130739802/8395a5.pdfIn PDF document text
    • http://kuvapo.coltstennisbooster.net/uploads/1/3/0/7/130776783/tadaf_wesofamug_vedenab_lufuxudax.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/1/0429/1795/3702/files/kasavanovomove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/troy_bilt_riding_mower_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/bootstrap_3_offset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/sanerurudukitavupik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/blackberry_key2_le_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/fender_passport_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/41197425987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8324/2401/files/21103797808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8764/2267/files/sazaram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/gowurawoj.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_off00006824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6824 5468 bytes
SHA-256: 988b56be8ea08d7003fde0dbcfef54aa8eaa43bf3ce476f8457b3160544239e3
font_01_sfnt_off00007ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB7 10104 bytes
SHA-256: 850f10f3286fa455fdd5f3b96cf6e121d424c1dbb1cba947bacefc1153935130

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