Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57dc87ed74fbcc5…

MALICIOUS

PDF

37.3 KB Created: 2020-08-05 05:38:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76ef4804e0eacc8d0f758f1df8186abd SHA-1: f757ef397c24373f78046d32235a40ad01cd58a4 SHA-256: f57dc87ed74fbcc58de7a1810c1e37e02a7afa01c5c4f2770214e844ddfa1e36
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, likely as part of a link farm to improve search engine ranking for the malicious content. The primary intent appears to be directing users to the malicious redirector.

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=action+verbs+worksheets+for+grade+2+pdf In PDF document text
    • http://files.mikericesports.com/uploads/1/3/1/4/131438188/76733f.pdfIn PDF document text
    • http://files.hilltaxis.co.uk/uploads/1/3/2/3/132303359/vijepepuwiki.pdfIn PDF document text
    • http://files.centerrec.com/uploads/1/3/1/4/131453054/fowasadomafexud-juledawuxisu-laromimasifolaw-pefulapazavim.pdfIn PDF document text
    • http://files.allieetoile.com/uploads/1/3/0/9/130969352/994304.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/1/0434/4889/3606/files/92719256566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1610/9736/files/soccer_coaching_attacking_drills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/40823920251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/ginudareweduvolewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/50_shades_of_grey_book_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/magic_training_guide_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/nebupaxanulerad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/latuxamakivurikesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/pink_line_metro_route_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/titapotexovugerumoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5748/7778/files/64874825448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/324396245.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 7

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_off00005280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5280 5864 bytes
SHA-256: db0183049a5392a39eac83761217194fc1c7c2f443585fea8f0008aa7a508bb0
font_01_sfnt_off0000668c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668C 9876 bytes
SHA-256: 8aa45a09b7287c1a9161aea07a1b12201f01512b604d3c919ce0a3f5b5a074e3

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