Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb37ca4292e2fd6d…

MALICIOUS

PDF

36.8 KB Created: 2020-07-28 23:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd346e86e28858e52781a411ec2fbcb4 SHA-1: 6bf32aa454cf4433c7a620763d18f62ff72cc219 SHA-256: bb37ca4292e2fd6dfe1b30a3a6f31b00b022758f4d6a81a30957c5bd4fb4af32
214 Risk Score

Malware Insights

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

The PDF file is identified as an image-only lure, typical of phishing attacks. It contains a critical malicious redirector link pointing to ttraff.ru, which likely serves as a gateway to further malicious content. The document also features a link farm, with multiple PDFs hosted on cdn.shopify.com, suggesting an attempt to leverage legitimate platforms for distribution or SEO manipulation. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 36 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=cessna+172n+parts+manual In PDF document text
    • http://files.waxgalleryechuca.com.au/uploads/1/3/1/4/131484328/929d7f5a7.pdfIn PDF document text
    • http://files.coreyrobinsonmusic.com/uploads/1/3/0/7/130738714/bubamamun-rurofulipefol-mugisodof-kinibibimetike.pdfIn PDF document text
    • http://files.signsbytran.com/uploads/1/3/0/9/130969340/6780620.pdfIn PDF document text
    • http://files.bodybrainexercise.com/uploads/1/3/2/7/132710783/xovanofusibolutar.pdfIn PDF document text
    • http://files.emmadean.com/uploads/1/3/1/4/131406800/bc4614.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/1/0435/3212/4312/files/zovulozifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/37794058822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/58640739945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/boravevuwovupovekipago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/8983577720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/74151765837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/nalaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/90792084040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/7497640160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0164/2149/files/24984771044.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_off000059d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D6 4976 bytes
SHA-256: 606fc0f2671617f0c81da63df566915e98de6efe447cb07cc69d2c2736d9575a
font_01_sfnt_off00006aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 8580 bytes
SHA-256: 3a7eea80850ba21f66b64ea600e317b4ba7516b36a5d6e4754236ef5874cc489

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