Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe9abe7df7c1218…

MALICIOUS

PDF

45.5 KB Created: 2020-08-06 16:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 435d9a7214fa2071dc5c9877b811233c SHA-1: 99813f824fdc1d97ea75c41dd7bed87d0b96aff7 SHA-256: cbe9abe7df7c12184b566a0d74a9ca195a0db4132b8c2b8c65fdb1fed14555ed
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. This URL is part of a link farm designed to drive traffic to various external PDFs, many hosted on Shopify. The document body, though heavily corrupted, contains the same search query as the redirector URL, indicating a likely SEO spam or phishing lure for free PDF downloads. No scripts were extracted from this sample.

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=libros+de+catequesis+para+ni%25C3%25B1os+pdf+gratis In PDF document text
    • http://files.teatimewithnaomi.org/uploads/1/3/1/6/131606222/74f872dc.pdfIn PDF document text
    • http://nekafumuv.wildrootsyoga.com/uploads/1/3/0/9/130969744/9513113.pdfIn PDF document text
    • http://files.freshenitup.org/uploads/1/3/1/4/131438423/loxes_fafupepob_pamedovis_wekuveraf.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/1/0435/1302/0570/files/23878809326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/desosomojakiridipusina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/41656660493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/uninstall_flash_player_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8155/4325/files/blender_2._8_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/94574374979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/midas_m32_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/java_ap_computer_science_textbook.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 4

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_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 5592 bytes
SHA-256: f650b4a44df42c18d65180b56599fc8deb9e79f9de1c1bcb08685c392ec19646
font_01_sfnt_off000073e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E3 11436 bytes
SHA-256: 960b348dfa2276281c6107aa4442c82763910e74f6fec261fef43182a16f9070
font_02_sfnt_off000098dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98DD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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