Malicious PDF — malware analysis report

Static analysis result for SHA-256 9918bd2d3f17f888…

MALICIOUS

PDF

34.6 KB Created: 2020-08-16 18:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c505e6b07f75f7e286677687d7ca9db9 SHA-1: b946474e5829696b57e602123f379211292dab9d SHA-256: 9918bd2d3f17f8887d1ec5fdb39fbb5e5c941c74dee72942e13d47bca8cf2794
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.ru/pify?keyword=freestyle+2+sg+skill+guide'. Another critical heuristic identified a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0440/4156/8421/files/xenipezu.pdf' being the first URL in this farm. The ML classifier strongly supports the malicious nature of this PDF.

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=freestyle+2+sg+skill+guide In PDF document text
    • http://files.foldedfeather.com/uploads/1/3/0/8/130874029/fokonajifodilof.pdfIn PDF document text
    • http://juxem.bcdancepassion.com/uploads/1/3/0/9/130969352/a472a1e33.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/1/0440/4156/8421/files/xenipezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0859/7927/files/87404363566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4191/2997/files/78642761878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8605/3527/files/bahubali_2_full_hd_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/40375243015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/81682438727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0079/0170/files/fazubozaroviruxekunuleja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/5593519550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2046/7869/files/gumonigusimorujofosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/vemiduwaradinubeved.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 4

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_off000049d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49D9 5036 bytes
SHA-256: d524f55477c01ffa45afb76ab5bdba5388e85ce67e74cc608430bc91b9f657c6
font_01_sfnt_off00005b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1D 10288 bytes
SHA-256: 60fe783200407b807e408c0a82ae9452beab4e7e3c9e4c314c21c2855998510a

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