Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa486952fd07e9e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-15 05:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b25d7658396ab4930fa8d27e931fc6b SHA-1: a035620fbc1f252c65bcc8bbf1291fb14d340951 SHA-256: 2aa486952fd07e9ead9eeb7d29860c1e281e6bb8671b4b8ff9277c694ab9830c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. The presence of the URL 'https://ttraff.ru/pify?keyword=internet+video+er+android' in the document body 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=internet+video+er+android In PDF document text
    • http://jotana.physicallyeducated.com/uploads/1/3/1/6/131636744/6421833.pdfIn PDF document text
    • http://files.popcollection.store/uploads/1/3/2/3/132303270/2135401.pdfIn PDF document text
    • http://files.onlineclasspass.com/uploads/1/3/1/4/131437702/pilalokupo-tuvugowox.pdfIn PDF document text
    • http://files.esilwater.com/uploads/1/3/1/4/131438629/rafoleduxofomedabuje.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/1/0430/0662/3903/files/vodepibolanematorixij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/25315499973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6827/7404/files/kegijumegozatukez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7888/5280/files/29843440160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/22086801823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4346/2037/files/latelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/midas_m32_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/rorimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/j_dilla_donuts_zip.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 4

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_off00007275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7275 4608 bytes
SHA-256: b1a2a65efcf4aa3d27739fcd4b839e3eedb56e6d205458d9d61970661a7e9d77
font_01_sfnt_off00008225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8225 10336 bytes
SHA-256: ef7165808ee8c91515c558a4d8336f73c4bcdf68c05deb2c0b87ea1a977a14d9

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