Malicious PDF — malware analysis report

Static analysis result for SHA-256 605e40f93959b5db…

MALICIOUS

PDF

59.9 KB Created: 2020-08-25 03:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0400c60bcb44a079a2e575efd38ca08a SHA-1: f0fdc7a0faea029b70d72d40ceedcf8f474a7f42 SHA-256: 605e40f93959b5db94f0bdfe9c95da72462034c14be437e07ae3847b4be47dd8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure via 'ttraff.cc'. The document body, though partially corrupted, includes the same URL, suggesting a lure for users to click on what appears to be an academic paper but leads to a malicious redirector. The presence of numerous external PDF links further supports a link farm or phishing attempt.

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=alexander+pope+as+a+satirist+pdf In PDF document text
    • http://files.finewillrockthehouse.com/uploads/1/3/2/6/132695732/tavajulize.pdfIn PDF document text
    • http://files.mindbuild.org/uploads/1/3/1/6/131637881/papigun_jijoxujisovew.pdfIn PDF document text
    • http://files.anlageskincare.com/uploads/1/3/0/7/130739517/487775.pdfIn PDF document text
    • http://files.zopaart.com/uploads/1/3/0/9/130969717/reguviz-pojek.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/1/0432/4527/3248/files/common_job_interview_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6645/files/borakipij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/pequenos_poemas_em_prosa_baudelaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1599/9386/files/behaviour_modification_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/lp_anemia_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1900/0229/files/google_maps_api_latitude_longitude_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2331/8683/files/driver_s_permit_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2673/files/arbitrase_internasional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/business_english_pod_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/81263706706.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_off0000aedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDD 5092 bytes
SHA-256: 3b6337f665c6437333e79ce039ffa77a6397eb42477bda7c65839b5f934deceb
font_01_sfnt_off0000c038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC038 10240 bytes
SHA-256: 949acf94f946f7caf952efdcc77b0dbb0a62a5e76da63b920b453b60e1df97a9

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