Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cab72a372bb2921…

MALICIOUS

PDF

37.6 KB Created: 2020-08-22 20:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21836cc8d0296cd8105cd927bc8dfd41 SHA-1: e2c55b91636edf111c3c493c8bb1097c042a9682 SHA-256: 9cab72a372bb29211e8387124260c241d1cf671707606ad775b2b8e98203c42f
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded document body contains the URL https://ttraff.com/pify?keyword=dance+academy+tv+series+free, which is identified as a malicious redirector. The presence of numerous links to external PDFs, many hosted on shopify.com, suggests an attempt to obscure the final malicious destination and potentially leverage SEO tactics for distribution.

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=dance+academy+tv+series+free In PDF document text
    • http://files.wearforart.net/uploads/1/3/1/4/131437689/2830040.pdfIn PDF document text
    • http://tigigim.sarahpounds.com/uploads/1/3/0/7/130739892/4c2a4cf7c77.pdfIn PDF document text
    • http://files.sparetimewooddesign.com/uploads/1/3/1/4/131437254/7898055.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/1/0438/5207/1074/files/sotafunutivodinikokojuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/marine_gps_app_for_android_without_internet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/65621658903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/physically_based_rendering_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/git_remove_added_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/meduwasalirilikud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9535/0684/files/fevux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/gefut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5122/1143/files/medefikenuwifulidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/57352016122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/32531956349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/10563603316.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 3

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_off00005252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5252 5296 bytes
SHA-256: ed8b6b815473fe85f76e47b2db61363276c7cdd390c067fbd2b035b180b7008a
font_01_sfnt_off0000644b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644B 10948 bytes
SHA-256: cdc5a07dd3a8df141e12e89a92866649682657b2e2185f527f9f21a300bda37a

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