Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a56abfe1673c35…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 17:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cb3c7a264ca108d7e4d1ae02020f4b6 SHA-1: 2a09f88c28712d8e956b91be64203ac19f0759e7 SHA-256: d9a56abfe1673c35b1e500666a9b48fe3179addd9fd3aeb9ed87a6bf91d017e6
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL and a call-to-action phrase, suggesting a lure to trick users into clicking the link. The presence of a link farm further supports a malicious intent to distribute content or redirect users to malicious sites.

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.com/pify?keyword=new+assamese+language+video+song In PDF document text
    • http://files.tukawaysleddogkennel.com/uploads/1/3/2/7/132740277/73c41927b3edc58.pdfIn PDF document text
    • http://files.transmundanepress.com/uploads/1/3/2/7/132740836/5664439.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/1/0435/5588/1111/files/33934489068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3298/3205/files/tapokefiwit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2242/6013/files/6255926563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/84238245855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/26808223081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/koguvivefezelizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6556/files/apprendre_les_fournitures_scolaires_en_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/gasixopevopole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/gta_5_online_mods_xbox_360.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C18 4972 bytes
SHA-256: 515960674b85a7bb557af39bf04e1ed73bea55bd57d5b808491ddac69c35d7aa
font_01_sfnt_off00005cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFB 9440 bytes
SHA-256: 925c0ff01761f1e0a5f1058f1959ede970259ac8feba7f4ad7a033fad568e98d
font_02_sfnt_off00007d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D41 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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