Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b2b21396cc366c…

MALICIOUS

PDF

57.9 KB Created: 2020-08-01 14:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 443230cb2f231fec88598f60305ed2b6 SHA-1: f183cd6e6769df2e4010a5a167c52fbcbd1dfe1c SHA-256: c2b2b21396cc366c04334b78f03c9b4b641448ea1d0875c042486ffe65e80193
194 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users into providing credentials. The document body, though heavily obfuscated, contains the text 'Yahoo notepad login', suggesting a credential harvesting pretext. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, indicating a link farm for SEO manipulation or traffic redirection.

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=yahoo+notepad+login In PDF document text
    • http://files.khloekares.com/uploads/1/3/0/9/130969989/97e718e1830f7.pdfIn PDF document text
    • http://files.reimaginepossibilities.com/uploads/1/3/1/4/131437157/9193912.pdfIn PDF document text
    • http://files.a2arnett.com/uploads/1/3/2/7/132740327/vuraxarum.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/1/0429/5370/3590/files/92845375364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/mamow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/net_compakt_framework.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13121593915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/tutikodazerekixugufop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/18878258562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/62093172245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/7653757012.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 2

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_off0000a5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D5 4908 bytes
SHA-256: 0d8764696d8be1e5ccf81ade8727b82aa26954521c107dd0747b4b89392d4227
font_01_sfnt_off0000b68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68C 10780 bytes
SHA-256: ccd8794647428558e83d64c7ff78d8914575064b30734f716190113997fe7c90

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