Malicious PDF — malware analysis report

Static analysis result for SHA-256 28744e748de2b8d2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 00:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8252e84c3c3a59f59b8362f6b10dd9e SHA-1: 74f489bc84b0e6d0e1f2e3aaf398e2a782b4b62d SHA-256: 28744e748de2b8d25dab5b34cf782e3d867ce6c07bc8c2a26bdb28d3c5f32137
202 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which are part of a link farm designed to improve search engine rankings. One prominent link, disguised as an 'Avon catalogue download', redirects to a known malicious URL (ttraff.ru). The presence of a visual download button further supports the lure. The file's structure and the embedded links suggest a phishing or redirection attack aimed at leading users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=avon+catalogue+august+2020+download+pdf In PDF document text
    • http://files.customhighlightvideos.com/uploads/1/3/1/3/131384424/lamodalovuziv.pdfIn PDF document text
    • http://files.nzplantservices.com/uploads/1/3/0/9/130969772/8864188.pdfIn PDF document text
    • http://files.adamkaszycki.com/uploads/1/3/0/7/130776483/195181.pdfIn PDF document text
    • http://files.glorytabernacleministries.com/uploads/1/3/1/3/131380596/xiwugumosonetexu.pdfIn PDF document text
    • http://files.spitzpsych.com/uploads/1/3/1/4/131406558/sefigeguga.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/1/0440/5736/2597/files/define_educational_attainment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/bumudosibofureto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/laxororewelegiwapaxeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1852/files/xepodofijafafitivam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/75072982294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/27851467414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/sunken_temple_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/26324573719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/24103035508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/35624403671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/bushcraft_101_portugues.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_off00006192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6192 5644 bytes
SHA-256: b3d77b3c27a39c9da0ec585aa432e60574a01413f49dbed62a01180d33bbc002
font_01_sfnt_off000074f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F8 10520 bytes
SHA-256: 1a95eef26ddceb59ccb88490831347fcf7e4a1e07ca824e971b4a9a0bc9e0151

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