Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7db6383148fbb7…

MALICIOUS

PDF

43.5 KB Created: 2020-08-27 17:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89b9afe83d5890f1cf324c6bd552e508 SHA-1: f3e890884ab2975b5d7a02a5d6e32a41a0ef3f7b SHA-256: cf7db6383148fbb74c83db7310e5a1fd55fdc1dd2688297b311626a6dd583ca8
194 Risk Score

Malware Insights

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

The PDF document contains a lure related to a popular game, 'Vikings war of clans hero guide'. It embeds numerous links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=vikings+war+of+clans+hero+guide'. This suggests the document's primary purpose is to redirect users to malicious sites. 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.com/pify?keyword=vikings+war+of+clans+hero+guide In PDF document text
    • http://files.sarahbovy.com/uploads/1/3/1/1/131163533/3778801.pdfIn PDF document text
    • http://files.girlplusbulldogs.com/uploads/1/3/0/8/130814254/5082490.pdfIn PDF document text
    • http://files.stjohnsbjj.ca/uploads/1/3/0/8/130813095/litukekap.pdfIn PDF document text
    • http://files.tcars.info/uploads/1/3/2/6/132681556/8526250.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/1/0428/2672/7580/files/27290562757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/41442571029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/59152541426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/chirutha_songs_free_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/minecraft_xray_texture_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6513/files/70816743656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/selavogotok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7991/5934/files/chutkule_video_tinyjuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2178/4472/files/72317867032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/ladipuzip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/vpn_premium_apk_cracked_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7136/5277/files/house_md_season_4_alone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/coordinate_geometry_formulas_for_jee_mains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/computer_binary_code.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 5

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_off00006cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDA 5404 bytes
SHA-256: 82a0bc0e4e609089537db30cb8d4fcabe3a3b2650f7af8493729d061937777bb
font_01_sfnt_off00007f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F41 9856 bytes
SHA-256: d718eab2ce852becbfc6fd2043136e93e2b559c752f3fef9856557294f49be51

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