Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a9778d11791419…

MALICIOUS

PDF

41.2 KB Created: 2020-08-17 02:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f28b1331b2b6f4e65ba00034a835171 SHA-1: 3c1322e34f5e8fb897ff7bea332205ddff505baa SHA-256: c3a9778d11791419a58ccb6f9f54ac17406213c01c684dbb43c2705b5bb86a81
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 of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=que+es+la+certificacion+leed+pdf, which is flagged as a malicious redirector. The document body text, though partially corrupted, includes this URL and a seemingly benign title, suggesting a lure to trick users into clicking the malicious links. The presence of a link farm heuristic further supports the malicious intent.

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=que+es+la+certificacion+leed+pdf In PDF document text
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdfIn PDF document text
    • http://files.theorionfoundation.org/uploads/1/3/1/8/131856205/8907233.pdfIn PDF document text
    • http://files.mtasoftball.com/uploads/1/3/1/8/131871642/9457994.pdfIn PDF document text
    • http://doritudek.onsighteyecare.co.uk/uploads/1/3/1/4/131406592/polasa-sogutusotik-xotirozifolutur-zomurasuduvos.pdfIn PDF document text
    • http://files.banyantreeatpavilion.com/uploads/1/3/0/9/130968921/bc07a.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/1/0430/3529/5905/files/63087732915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/nuzusixugakutome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/moburerinisetogolevitalok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/ge_gtw680bsjws_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/friendship_website_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87074842841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/161353909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4786/9850/files/adanga_maru_2018_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/89202683428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/demegojitiwedatoxufogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9496/2332/files/23703943094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9750/files/freya_build_guide_mobile_legends.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_off00005f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 5212 bytes
SHA-256: 4142088e61be356e1f4f45237785dbc9358c43bae81df1cf15c49769edb6863f
font_01_sfnt_off0000715e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715E 11348 bytes
SHA-256: 666846b0da9edd43c6f54ef79837b24b423889f4b90b9e156f2106fa9ebd0f68

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