Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0dcf7dee0d6e7da…

MALICIOUS

PDF

42.5 KB Created: 2020-09-16 22:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c36c38a1f268b8a4cd4cb71eb9defe3b SHA-1: f7a5d1abb3b7279e4794ca2e2944d92e8be7bae6 SHA-256: f0dcf7dee0d6e7dae6a4bb702646061b33f4750f3c7aeb18c9e954df903b6b77
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, https://ttraff.club/wix?keyword=harvard+air+hockey+table+reviews, points to a known malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute traffic to malicious sites.

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.club/wix?keyword=harvard+air+hockey+table+reviews In PDF document text
    • http://files.4everinelectricdreams.com/uploads/1/3/2/6/132695387/5693544.pdfIn PDF document text
    • http://valaxamu.shopcharmhousedecor.com/uploads/1/3/1/3/131379956/3216764.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/1/0431/4116/9303/files/work_performance_appraisal_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7312/7079/files/ugly_electrical_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/nafapuziwefumax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4413/4294/files/cantate_domino_josu_elberdin_satb.pdfIn PDF document text
    • https://6e74b444-fe16-4d56-9a98-7a604e79b01f.filesusr.com/ugd/defcb2_26674211966344d08d4502a34bf51c8a.pdf?index=trueIn PDF document text
    • https://cd02aed7-373e-4c37-9251-88462e14949e.filesusr.com/ugd/6cabbb_dddcf929b5b54784848be8d9b6ccaa3f.pdf?index=trueIn PDF document text
    • https://9419707c-5ca6-41a6-8ce2-2fdf9ea37b88.filesusr.com/ugd/ad2ade_411b9cc4cd6d4fadbccd79254d758eba.pdf?index=trueIn PDF document text
    • https://7d0d9cf0-4626-49fd-9c31-da0c26acd5d5.filesusr.com/ugd/9ea91e_5f444721a8c841bbb84e11545f6110e1.pdf?index=trueIn PDF document text
    • https://aa295a2a-38a5-427d-bf58-52345870f0c3.filesusr.com/ugd/c33cdb_ac065866e5e5406eb492071f27a0fb08.pdf?index=trueIn PDF document text
    • https://13fb088d-7158-43d5-85ac-3f57e5ae950b.filesusr.com/ugd/9c66ff_a0601ffff2ff4c9da5eacdcfd9322956.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 5448 bytes
SHA-256: 5591447a79ca325aba5d26a0bd4d51571d2b3ebde8ad186931ad346facd4754a
font_01_sfnt_off000079ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 10224 bytes
SHA-256: 2afae196549b18c3714e824cadde12414a48993737090dad510a539f1160d5d1

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