Malicious PDF — malware analysis report

Static analysis result for SHA-256 0984183b53ea3f39…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 22:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4915bbba86d606d201290b4388e77749 SHA-1: b7968af5dff489fcb208f84024c33a2394203d58 SHA-256: 0984183b53ea3f3948aee260edda739bb9f5ea94ffc5db4e0ecdcc37a8b79b03
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded links suggest a lure for free PDF downloads, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of redirector links supports the attack pattern.

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=informal+letter+writing+format+pdf In PDF document text
    • http://files.vailmassagetherapist.com/uploads/1/3/1/4/131437376/7bc860bc6b.pdfIn PDF document text
    • http://files.upperroomcardington.com/uploads/1/3/2/7/132741382/2334017.pdfIn PDF document text
    • http://files.bluecactuspoolservice.com/uploads/1/3/0/8/130873708/5009653.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/1/0431/1249/7312/files/a_posteriori_error_estimation_in_finite_element_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/sklearn_multilayer_perceptron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0440/2584/files/19602100446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9472/1187/files/32703647587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/reading_skills_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6277/9295/files/57467609991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8251/4581/files/atopic_dermatitis_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0919/files/mamajevekebizelenivawaxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/the_force_awakens_visual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/mijapimivoxerunadem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/wosefamojurarax.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
🗂 Part of campaign: saratogadandia.org 6 samples

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_off00005f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 5212 bytes
SHA-256: 81734342d7ff7746df8a5f7e417918fa9de70d454200c59098b8059f5b53fd30
font_01_sfnt_off000070eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70EB 10732 bytes
SHA-256: 0317efc4b2268f6c136b2c53755ba8f008f7a52999c1c8a2ba185cdbf0d1ac80

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