Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45ca7d176e6c99b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 08:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbdbf3376c37206054fd73b7d0b4ec08 SHA-1: ba8494bbae8113617a6c46979e6f26f7e3de2a29 SHA-256: d45ca7d176e6c99bf546ba698cdc6cf98d2770cd748407575ca7d0141f86592a
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a PDF link farm pattern, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to distribute further malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=shigetora+skin+2016.

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=shigetora+skin+2016 In PDF document text
    • http://files.thesuccessfulprincipal.org/uploads/1/3/2/3/132302924/kizonipavuniwas.pdfIn PDF document text
    • http://files.greenrivermwc.com/uploads/1/3/1/6/131607407/jovotuzasivof.pdfIn PDF document text
    • http://files.blockchainmena.fintecnet.com/uploads/1/3/2/6/132681824/3836569.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/1/0431/7659/1509/files/29699620100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/diwipexobusemugubemuzewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/80171913597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/gezikaludijezegusogarus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9266/3702/files/febilox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ketotojugidumirazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/babolun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/dotinilabulakapusebideta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4924/6102/files/ledozolik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/sokofopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/32326502757.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 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_off0000744a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 5564 bytes
SHA-256: 50adcf8c58673db4a73fa17b56443271f6f3dc567da309364e272fd2a7a2cade
font_01_sfnt_off0000872e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872E 10492 bytes
SHA-256: aabcabf9da52f71c6409104a7f6c47ec06f35e5ba5143eed3b803261e055a069

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