Malicious PDF — malware analysis report

Static analysis result for SHA-256 854c9881bef5b930…

MALICIOUS

PDF

43.2 KB Created: 2020-08-08 22:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf375463f5c431c762ded5a9c0498f8e SHA-1: 1b2fe02ab7105b9d9b4f3ae7ea7e0fda90cfb970 SHA-256: 854c9881bef5b930b4ce620a9d32e149dbb8a9659fa481b2c7f12f9ba2281d55
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including a critical redirector link to 'ttraff.com' which is associated with malicious activity. The document body and embedded links suggest a lure for free PDF downloads, likely a phishing or scam attempt. The presence of numerous external PDF links further indicates a link farm strategy to distribute 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.com/pify?keyword=alter+ego+4+pdf+free+download In PDF document text
    • http://files.8ritual8.com/uploads/1/3/1/4/131438180/f44acf2b.pdfIn PDF document text
    • http://files.jonathanschakel.com/uploads/1/3/1/4/131455275/ea84d1a21c.pdfIn PDF document text
    • http://files.mattnevergivesup.org/uploads/1/3/1/8/131857758/seregudokupi-gezovi-sinodate.pdfIn PDF document text
    • http://juguwiz.gvdesigncontract.net/uploads/1/3/0/9/130969754/gisenejixa_luxarojulus_zuraxobugus_kugekis.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/1/0437/2840/4632/files/josibisunekalufimiluzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4537/6420/files/crate_bx-_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/nonuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/search_engines_information_retrieval_in_practice_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1235/7270/files/bypass_capacitor_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/45608344931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/78572262856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/neworogif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/1546276718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/75727140924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9885/5840/files/binomial_expansion_formula_1_x_n.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_off00005c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8B 4940 bytes
SHA-256: ac8808f3a04216aa017f04d975b53b4a4058c577b1a4adf5e23cb795e3860984
font_01_sfnt_off00006d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 10788 bytes
SHA-256: ea04693c962e93cf817ee7238ebde1c23a8c394ea4dd97b4e403bcde39d55df6
font_02_sfnt_off000091e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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