Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef0c21d44598f9d…

MALICIOUS

PDF

40.2 KB Created: 2020-08-13 23:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12b06e3fd755e866f21848301ad5d3cb SHA-1: a751c4141886a8c9d7f6ab37115613612b8fa909 SHA-256: eef0c21d44598f9d340d0037c966b75e5afbe7305a91421037c1883c48d4a76f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This indicates a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=kindle+app+android+read+aloud, suggesting a lure to download or view content related to Kindle apps, which then redirects to malicious infrastructure.

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=kindle+app+android+read+aloud In PDF document text
    • http://raluxejeb.kookabubble.com/uploads/1/3/1/3/131398020/revupaz.pdfIn PDF document text
    • http://files.theschenectadytradingcompany.com/uploads/1/3/0/7/130740213/vosukevero.pdfIn PDF document text
    • http://files.hannibaltruechurch.com/uploads/1/3/1/4/131438418/7458681.pdfIn PDF document text
    • http://files.novotekcorp.com/uploads/1/3/1/3/131381679/dawisox.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/1/0434/5970/7037/files/fejemuzinug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/52979848068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/xetema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9939/5998/files/79407496557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65496272691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/43810174399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/vuvofiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8993/6025/files/interesting_facts_about_space_and_planets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/fivezotofozawixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9645/4808/files/mimuweregegikopapip.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 1

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_off000060a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 4744 bytes
SHA-256: 120f8eadd878f7c87e10c33c142eee69bc45a15abf80876591c56d31d437c76f
font_01_sfnt_off000070c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C2 10352 bytes
SHA-256: ee8354601bbcb8235837e5a2198a77d42040fe7c7324ddad8639ffa59f5e4c0f

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