Malicious PDF — malware analysis report

Static analysis result for SHA-256 8149508706934c95…

MALICIOUS

PDF

35.8 KB Created: 2020-08-18 20:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32da9faba7905d93baeaf10c2472ffe4 SHA-1: 21a0b0b4bff57e43414950cd7c89ffcc58d3982d SHA-256: 8149508706934c95cdfb7d64ddcccc7486477d258d44aaa2129baa6393e1fcf2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=cushman+wakefield+market+reports as malicious. The document body, though heavily obfuscated, contains references to market reports and the malicious URL, reinforcing the phishing lure. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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=cushman+wakefield+market+reports In PDF document text
    • http://kelojareg.mervilleunited.com/uploads/1/3/1/6/131607321/a99c443087.pdfIn PDF document text
    • http://files.bartlettandgoldgallery.co.nz/uploads/1/3/2/6/132681494/nifulilujef.pdfIn PDF document text
    • http://files.botezatconstruction.com/uploads/1/3/0/9/130969241/927049.pdfIn PDF document text
    • http://files.tridentpest.com/uploads/1/3/1/6/131637316/suzubo.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/1/0429/8375/1831/files/gibagovuferopesexiduboref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/wibiwobomepuruvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/deresojosos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/kodasinuteromubunubaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1160/files/lesiruvujubazesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7273/files/biology_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/38508687809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/72228867174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/acalculia_sintomas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/kozuvoduxemunasarog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7132/3808/files/bundesliga_spielplan_2020_19_rckrunde.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 8

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_off00004e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1F 5344 bytes
SHA-256: 3de5bfc79edf650f1eb3b3fc89a5c7907ae245228a573ba6efef474e810cf0fd
font_01_sfnt_off00006033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6033 10028 bytes
SHA-256: 871b6e2cf99026e310f17bf7d4431137c64ec3487e8ba64e42f59182b5b2d5f1

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