Malicious PDF — malware analysis report

Static analysis result for SHA-256 4845e7c3151f5138…

MALICIOUS

PDF

38.8 KB Created: 2020-08-24 20:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a5d3ca72e2657fbdc9bd35869eca90c SHA-1: 797832db1110651794663d8b2b68ec9815000a73 SHA-256: 4845e7c3151f513806439416aae0f71454bcd944c42380bde1fecac4d2085afe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=perfect+ed+sheeran+piano+sheet+music+easy'.

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=perfect+ed+sheeran+piano+sheet+music+easy In PDF document text
    • http://files.rainsweptgame.com/uploads/1/3/1/6/131606025/vupebazenitoli-feziwegodowikip.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/1/0434/0128/1701/files/devexpress_report_hide_subreport.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/dante_divina_commedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1689/6162/files/archicad_12_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5570/2165/files/information_and_uses_of_mercury_barometer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/0487/1076/files/apology_for_poetry_by_philip_sidney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/bapisufosewudemakajojozev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/social_media_definition_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/nijidalemusijosakiganavig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7133/0709/files/stick_it_and_roll_it.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3757/1744/files/antenatv_apk_1._0._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/76363499943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/basketball_score_sheet_fiba.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 3

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_off00004aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFF 5468 bytes
SHA-256: f56d892135f2eb00cca34f7f4daa8c941effa9e60a0b50a7cbedaf7f1a29f5e5
font_01_sfnt_off00005d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6E 14856 bytes
SHA-256: 9cf18bbf356ad422747f98bc3bd359d4349ce0250fba84994484205b848f2d0c

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