Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8801d9cb3f29e9…

MALICIOUS

PDF

44.2 KB Created: 2020-08-25 01:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 707d70ad6aacde9e6e32a88d1a7d77ad SHA-1: fd70dc26a2745858e7c3d4b13615330129190a53 SHA-256: ff8801d9cb3f29e91b52e3486d227e46d7701ed7ee25a66b293a3543d887545e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=interpreting+graphs+worksheet+pdf+grade+4', is designed to lead users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify. The primary malicious URL is the most critical IOC.

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=interpreting+graphs+worksheet+pdf+grade+4 In PDF document text
    • http://files.butlerearlyaccessnetwork.org/uploads/1/3/0/7/130776254/fafor.pdfIn PDF document text
    • http://files.arlenespiegel.com/uploads/1/3/2/3/132302978/fexurojasi_sivofoweroxen_suvetijopefi.pdfIn PDF document text
    • http://files.stampexinternational.co.uk/uploads/1/3/0/7/130739383/zozewisibu_danenugoravinas_zibazoned_vinudi.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/1/0430/3519/7602/files/12305204961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/13764865203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/zafurimejojeninekolisur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/digolotemiwikorul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/mikel_phelps_smoking_weed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/forklift_driving_test_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/jozidunajeredo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/jupin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/789471802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/27546203389.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000617b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 5240 bytes
SHA-256: 093ea84706bf688e6f5beecca871f08dca9181d6c517cbe625529a9de4ac2ab3
font_01_sfnt_off00007351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 9948 bytes
SHA-256: 2b34bcdeb62c2040c8cc42517ef3a9e21cfd296b168ee37e34094e06ccec55df
font_02_sfnt_off00009560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9560 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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