Malicious PDF — malware analysis report

Static analysis result for SHA-256 953c38c55e2a65b0…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 03:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 470bed8153bf71bd72a559d02949888e SHA-1: 8e7b9e38081db15f47ec07a9b8ce663d9e19d3d1 SHA-256: 953c38c55e2a65b06b3b9ef0466aa723731f6d410ca3025fe21f9199c05ad921
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical redirector link pointing to a known malicious domain. The document body, though heavily obfuscated, contains text related to citation formats and the malicious URL. The primary attack vector appears to be luring users to the `ttraff.cc` redirector, which likely leads to further malicious content or exploits. No scripts were extracted, limiting the analysis of direct execution or persistence mechanisms.

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=apa+citation+format+example+with+multiple+authors In PDF document text
    • http://files.atelei.com/uploads/1/3/1/1/131164424/folawujude.pdfIn PDF document text
    • http://kafibala.goldenpandarestaurant.com/uploads/1/3/0/8/130813650/duzuninat-zapiwokuzew-jorigijomuvowij-jekeragob.pdfIn PDF document text
    • http://files.frederickdressage.org/uploads/1/3/1/1/131163943/wekusidulibubob_totidoxi_surogipujutofe_kirutezodurem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4954/7938/files/vapenodomefofujagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/eye_wash_station_inspection_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6433/7051/files/simultaneous_equations_worksheet_with_answers_tes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/catalogo_avon_campaa_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/jovesugigemerusodoxujog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/how_to_make_a_sprite_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/fulikibedap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/get_font_from.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B73 5288 bytes
SHA-256: 66ec02af8f8890e8a57501e1b66da4cf2b7e60d709389f8e6b0149e2e013c87b
font_01_sfnt_off00006d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D48 10040 bytes
SHA-256: 5c94eeda07c448d9df46d10c6bddbc3bf54b038fc72bd8fc1c50ca66d669a279
font_02_sfnt_off00008f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F44 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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