Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b5f28e0dbd111c9…

MALICIOUS

PDF

56.4 KB Created: 2020-08-09 19:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69a9b4d25562757425c30ac3851b1cb8 SHA-1: e0813a104277faee02c812baf1bad6d10757e461 SHA-256: 0b5f28e0dbd111c9bcd70bfb9985fcff5d877fa4cb0d8da94dd14f4b9251e5ff
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF document employs social engineering tactics, presenting itself as a free download for Adobe Acrobat. It contains numerous links to external PDF files, many of which redirect through a malicious infrastructure at 'ttraff.cc'. The document's structure and embedded links strongly suggest it is designed to trick users into downloading and executing malicious payloads, likely disguised as legitimate software or updates.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=adobe+acrobat+pdf+editor+free+download+software In PDF document text
    • http://files.twochicksandabar.com/uploads/1/3/1/4/131452840/dajanokidukijerufik.pdfIn PDF document text
    • http://gosotaj.prhsboyssoccer.com/uploads/1/3/0/8/130813528/diduxewetuwisisurisa.pdfIn PDF document text
    • http://xubabe.bribiepassagekiosk.com/uploads/1/3/1/4/131452977/nutujanixed.pdfIn PDF document text
    • http://falozukex.whidbeyworkingartists.com/uploads/1/3/1/3/131380213/8a0e75a0de97e.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/1/0435/9654/6216/files/36189011951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/bixofiwesiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/gafipepiralewijame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/ecological_systems_theory_bronfenbrenner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/ublock_origin_youtube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/40068703505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/34727945748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6327/9767/files/wunijevinuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58657968950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/86382060274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/2594724824.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AB 5236 bytes
SHA-256: c7811c6632dd50a776c8d491833c01d677c9cb717ddc2a53d264d4ae5b635fa4
font_01_sfnt_off00008516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 5372 bytes
SHA-256: 0c76d7f81c51c2d7adf54ec136474478201053315b19ef892bfcc8d4fe62f829
font_02_sfnt_off00009777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9777 10752 bytes
SHA-256: 66f78ce8a607c2cd5374b3b18adea69900444300a0dda7e5609bd2a10149624d
font_03_sfnt_off0000bc84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC84 16488 bytes
SHA-256: d6cec5d81403a3d70faea1540ef19555465bc704c2477342a2b01c02bc8a8e2b

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