Malicious PDF — malware analysis report

Static analysis result for SHA-256 7808c7d2d8db8484…

MALICIOUS

PDF

46.7 KB Created: 2020-08-17 18:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cdf56853be1681080ebee275dba1cb6 SHA-1: e46d28502cc073715f65d075f251dacff286839d SHA-256: 7808c7d2d8db84846c8050ad4394772e97041d6992356ab9a00becd588eec93d
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though obfuscated, contains text suggesting a lure related to 'Intellij code inspection report'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to attract traffic. The ML classifier strongly indicates maliciousness.

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=intellij+code+inspection+report In PDF document text
    • http://files.balannz.com/uploads/1/3/1/3/131383753/07865b.pdfIn PDF document text
    • http://zufuk.afghantribalarts.com/uploads/1/3/2/7/132710575/6fc9dac38a3f2.pdfIn PDF document text
    • http://files.ausmazehanatkhan.com/uploads/1/3/1/4/131483719/nakokudifaxovukejet.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/1/0434/0203/5351/files/mavifasuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/52177253668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/92321079809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/333026451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/kiwisenesakokudibot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/27169895195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/17394264629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/activity_based_learning_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/namapoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5378/3967/files/algebraic_expressions_and_equations_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/gofibek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2920/6939/files/how_to_disable_mcafee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/juxilo.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 6

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_off000078c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C6 4868 bytes
SHA-256: 45d37efa64f9b7a9fd162f96c513151bd71276dd8db4935774756ef0864dda98
font_01_sfnt_off0000895e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895E 10580 bytes
SHA-256: 9027587378fc33eee95da3b1d45bd2a512759c0964bcb7fd540df30a272eb701

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