Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed5674c3540f48a…

MALICIOUS

PDF

55.9 KB Created: 2020-08-20 08:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09b27e89d205999fbe464fba590d8634 SHA-1: d2ce1676ae9a1673c2315f6e6dd2cee030ba1529 SHA-256: 8ed5674c3540f48a02d4cc9534aa32498deb1723e7dcbb1d3afbd93b37378576
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is also present in the document body. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to Shopify domains. The ML classifier strongly indicates maliciousness. The primary attack pattern involves social engineering through a seemingly innocuous topic to trick users into clicking the malicious link.

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.ru/pify?keyword=answers+to+the+impossible+quiz+app In PDF document text
    • http://files.somethingsafoote.com/uploads/1/3/0/7/130739776/lilafam.pdfIn PDF document text
    • http://files.fortquappellelions.com/uploads/1/3/1/0/131070481/pejuwibokosadu.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/1/0430/9565/4554/files/79236254984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8094/7614/files/lafamumefigopos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/25337320158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/agile_testing_lisa_crispin_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/soronukigeroraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/veligepuxefedugikaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/muzetevilefaxeriwowexoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/vopusitabobesexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/xubeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7732/0352/files/iphone_7_android_version.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000086ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EF 5456 bytes
SHA-256: 3b437921a82e10a908cd56eeb3eed1f45f88f308d3478e8489dbb00b24d230ae
font_01_sfnt_off00009961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9961 10408 bytes
SHA-256: 55867d2d69a94aaed86ba29d37340dada772218430f706cd507cd5bd1e77be9c
font_02_sfnt_off0000bd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD01 16376 bytes
SHA-256: bc7e3f6831be34686de02ce7be2a06b9f1fa2b1a298201cd6e3dc3baf4672bf7

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