Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3899be1007ab07…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 11:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77b6efe67757baf2c2be2581aead77d5 SHA-1: 2cd72df4d8a40729b6663d929993eb8f92453966 SHA-256: ac3899be1007ab07475ffb13fff5dd1a09ae7f2f6deaade4417e1d6759537c03
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, specifically 'https://ttraff.cc/pify?keyword=reporter+killed+by+isolated+tribe'. The document body, though heavily obfuscated, also contains this URL and other PDF links hosted on cdn.shopify.com, suggesting a coordinated effort to distribute content through multiple external resources.

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=reporter+killed+by+isolated+tribe In PDF document text
    • http://files.stoddardumc.com/uploads/1/3/0/7/130776118/6980676.pdfIn PDF document text
    • http://files.neilmccarthypoetry.com/uploads/1/3/1/1/131164236/gomelokawamox.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/1/0435/1387/2548/files/tanit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/99470700967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/pdf_agama_islam_kelas_xi_kurikulum_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/xamiwowazikafejagazami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6503/7220/files/how_to_push_existing_project_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/aws_cloudformation_lambda_code_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/cisco_ccna_networking_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9689/1807/files/notes_of_data_communication_and_networking.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 7

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_off00006bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD3 5264 bytes
SHA-256: 77022ae50f435047bd67ad75acd2523b702fe656636acd824eba185d666adee7
font_01_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 11704 bytes
SHA-256: 49a904d5db4760ad1bda06987feef1ab6acf672b60ea0ef61e87a3dd1d9e8dd9

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