Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e9bd2644ca7c15…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 00:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 052b5b5740c03e1e284e762a4d795d53 SHA-1: 3adbd7fab48353518c32d847fcc40122138f5bfa SHA-256: 31e9bd2644ca7c150c63ac902932bb5befc0f8c13828eb868e74b709295f10ee
202 Risk Score

Malware Insights

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

The PDF contains a prominent call-to-action button and embedded text referencing 'Cricket captain 2019 apk', aiming to trick users into clicking a link. The primary link, 'https://ttraff.cc/pify?keyword=cricket+captain+2019+apk', is identified as a malicious redirector. The document also hosts a large number of other PDF links, many pointing to shopify.com, suggesting a link farm or distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cricket+captain+2019+apk In PDF document text
    • http://files.kathrynkohorst.com/uploads/1/3/0/7/130775970/ed65c6943f13.pdfIn PDF document text
    • http://files.thebrockenhursttaxis.com/uploads/1/3/1/0/131070342/gipow-toxiguxakovi-vefatig-zozuxonuref.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/1/0431/6571/2535/files/kaplan_step_2_ck_videos_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/3732977613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/dekonitidatasoziziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8563/files/let_me_love_you_mario_piano_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/limupubibitan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/genetics_of_sickle_cell_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/sexeroboduxukuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/vepifabosudosolukupemodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/46057682443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/kometex.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_off00005c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9A 5168 bytes
SHA-256: 82b8c420dc44d19d6959444900f722f02fab604d3b04224ec58ab3d0a034e0e4
font_01_sfnt_off00006e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 10524 bytes
SHA-256: df9b35e38508f2d33a81a5bf661e9a4077c11ed79dd811f82ec09b9c7e039f59

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