Malicious PDF — malware analysis report

Static analysis result for SHA-256 748cb3858734c998…

MALICIOUS

PDF

46.1 KB Created: 2020-08-11 09:36:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69a1616b9b1007c65ca421d5dcfd8cfb SHA-1: 93dcbcc264db6f42c6bfa745d4fd73d025fd3d3c SHA-256: 748cb3858734c9987da0421797af824373c9935e19a2f668d65114e7c5bb9f8e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body and heuristics suggest an SEO spam or phishing lure, attempting to trick users into downloading further content. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to drive traffic to malicious sites or collect user information.

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/wb?keyword=rainfed%20agriculture%20notes%20pdf In PDF document text
    • http://files.livinglifeyellow.com/uploads/1/3/1/0/131070149/6c6f62cca64e.pdfIn PDF document text
    • http://files.themusicstudiostafford.com/uploads/1/3/1/0/131070151/bamabowamul.pdfIn PDF document text
    • http://nudubabel.goodbless.us/uploads/1/3/1/3/131379578/zakarolu-xululufagejaw-matowojed-sukovomijexaf.pdfIn PDF document text
    • http://files.jdfitness360.com/uploads/1/3/1/3/131381414/rorikifadixunufizu.pdfIn PDF document text
    • http://files.stpiusinprint.co.uk/uploads/1/3/0/7/130740013/xoxoxelapanuper.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/1/0439/9867/5102/files/treble_clef_notes_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/10792968724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6295/8997/files/fibixitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/1972_gmc_jimmy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/32811938505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3028/0352/files/6679345438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/80796246197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/tosiniravujowixukefami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/fuxapulafekab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/644702016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/bilenot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/68722026674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/jebegelabusoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4398/7361/files/fosilerelufulu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000762c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 5328 bytes
SHA-256: 9514c10dee979236dba993c323918d33426cbed97c65b6810b447ec1e3f7a7fa
font_01_sfnt_off00008860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8860 10240 bytes
SHA-256: 29719be49f9c7a64dc3ac3e9e7a92a07f51f0e18c34cbcc2fda64033d5df7038