Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e98885bb696f32…

MALICIOUS

PDF

46.9 KB Created: 2020-08-17 17:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 459c416a3ab0e5ac0de98e07fde64bd7 SHA-1: a42129aab5a3d77dfb0781fe242c4b971aa69448 SHA-256: 51e98885bb696f324623d4ef5e54e5041c3a8816d2e2189ee88ed9ba5dfd39e3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=broken+angel+lyrics+mp4'. Another critical heuristic flagged the document as a PDF SEO link farm due to the mass of external PDF links. The document body itself is heavily obfuscated but contains the same malicious URL and numerous benign-looking Shopify URLs, likely part of the link farm.

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=broken+angel+lyrics+mp4 In PDF document text
    • http://xirarak.adriancoxart.com/uploads/1/3/1/8/131872155/woxefigazog.pdfIn PDF document text
    • http://bofuna.mychangingthenarrative.com/uploads/1/3/1/3/131383314/firotobabebazidakeg.pdfIn PDF document text
    • http://files.macpainter.com/uploads/1/3/1/3/131381946/a6a78dd1e17a39.pdfIn PDF document text
    • http://jinawupi.njlimotaxicab.com/uploads/1/3/1/1/131164456/a77699304ced335.pdfIn PDF document text
    • http://migumavi.alessandrosaini.com/uploads/1/3/1/3/131380345/gujat_kifusuligol.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/1/0436/4196/2646/files/kirinugezixunowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/46683299972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/kokoduzirixisufuvupot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1820/6888/files/xavuparumezeganifanavova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/accomplishment_report_intramurals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/33520336659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4062/1222/files/becky_g_can_t_stop_dancing_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/vorexatarovupatadewisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/50521253474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/72404767016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/89753456894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/xefuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/tixuzewi.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDA 5264 bytes
SHA-256: ac146096d84bcdec2f7ca935238b448b20c509dd21553603faf0cba41bf4fca4
font_01_sfnt_off00005eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 9800 bytes
SHA-256: 38fe30a7ecb497afb46871fde5bfba5f90a86434a0a377943e5db3ce76529646
font_02_sfnt_off00008091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8091 18776 bytes
SHA-256: dabf0ccc451caf4864c9b22ca91318a92e8f625b469dd0561edf59b451c7a792
font_03_sfnt_off00009df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3