Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd73523a30761b1…

MALICIOUS

PDF

50.5 KB Created: 2020-09-01 23:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e97f2abb4c9c61e261b3b2f81899053 SHA-1: c1cc7721668a634c185a3ac88779cb79f6ea8646 SHA-256: fdd73523a30761b137948843ffe5b24cbe01d98ccfb15a26f7fa8eb2517dc313
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is ttraff.ru, which is used in conjunction with keywords suggesting a lure for templates. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, likely part of a SEO poisoning or link farm strategy.

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/wix?keyword=excel+dashboard+templates+speedometer In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/9c0842_d1e030e1cb9e482b826b0c00e144635c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ec0c41_718625b51408485b84b98d85c1eb0b43.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3bca44_5e1a23c9915845feb80539fa5fd77f88.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f5892c_cf9cd48e722641e2820240277d6f38a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_042ded1c11234268b377a95cc34b3e07.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9e41f0_222a088394d9417d9d6d1f7bd2032b98.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e481ce_378569a03ccb4c3b9acf3843d4c4d4f0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4b7290_7f36d18960f44dc897078d96ea2a9c31.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0d2908_402b4eb42f9540298b77d7c23a00afa0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2ebd8_4d88d5b935e5472b9ccaac8ac3655e0d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_99ad1b897190417794d4720556388221.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_38493757649841c7a5b34681288a6b9c.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_off00007185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7185 5476 bytes
SHA-256: 27dc26fe485a3aa6944f51e034be16722dce4163b8db9835ec25be1127c78db6
font_01_sfnt_off000083f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F7 10352 bytes
SHA-256: c8f96535b39696e2c02523a140f3c8c4001a45290e652e6cd60eb050fe4b11be
font_02_sfnt_off0000a784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA784 16232 bytes
SHA-256: b2cbfceaf44fc4a56d1321c5677f125dfbde6a5f8c873b6a17361dd7c2aa5302

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