Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77d898ee3f67ebe…

MALICIOUS

PDF

50.5 KB Created: 2020-08-10 02:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f2f84c213b161ebe59a0afd91e461f5 SHA-1: 6c9bdcf82e64f1bd3b2a0dcd805f10cc89e2467d SHA-256: c77d898ee3f67ebee2d76a43695274bbf52b446c6d97a1daa1b54c894b156b04
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily corrupted, contains text related to 'accommodations for students with disabilities pdf' and the malicious URL 'https://ttraff.com/pify?keyword=accommodations+for+students+with+disabilities+pdf', suggesting a lure to a phishing or malware distribution site. The presence of many external PDF links also points to a link farm or SEO poisoning tactic.

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=accommodations+for+students+with+disabilities+pdf In PDF document text
    • http://tezajixop.thompsonvetclinic.com/uploads/1/3/1/3/131380729/tewolewu_jababak.pdfIn PDF document text
    • http://balosu.carmelmusiccenter.com/uploads/1/3/0/7/130775734/bavife.pdfIn PDF document text
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.pdfIn PDF document text
    • http://files.startingpoint.info/uploads/1/3/1/3/131380345/6809996.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/1/0430/5820/0729/files/83832455930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/vufevokikifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/39311246692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/demolano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/manual_cbx_200_strada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/armstrong_pullup_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/lafugijeranew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/google_maps_driving_distance_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/defects_in_metal_forming_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/flight_rising_familiars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/27928500576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/12370413614.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CB 5496 bytes
SHA-256: 7da5d1015504f5b5f0b6c4699da8968b69a63c3dc621e64910a10fc478515c2b
font_01_sfnt_off00008c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C47 10076 bytes
SHA-256: 302e04d49c5a31caf1f3cb28deb4a828143daaeec12447af6d1a159c6ff7cb35
font_02_sfnt_off0000aec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3