Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b97e80ffba4863d…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 22:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 957bf1cc9edb3d92b5a9210738d8a72e SHA-1: 068d0fdf797b78c0d0573a1487c1a230c56fb754 SHA-256: 3b97e80ffba4863d6b0f60a0d998086c68e82dc689cdd0c8802512b4626048a1
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=online+marketing+articles+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which are to Shopify domains, likely to improve search engine ranking for malicious content. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs.

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.cc/pify?keyword=online+marketing+articles+pdf In PDF document text
    • http://files.blissbeauty-gourock.com/uploads/1/3/1/4/131407135/ferugoz_nalabubal_zeweko_nitavejadid.pdfIn PDF document text
    • http://files.willowpath.com/uploads/1/3/0/7/130738841/6038394.pdfIn PDF document text
    • http://files.silvercreekservicesllc.com/uploads/1/3/1/8/131856919/77f488b9439.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/1/0432/0280/5921/files/inductive_and_deductive_approaches_to_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1943/files/activity_based_costing_article.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/24935405450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2837/2886/files/split_function_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/ducky_one_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5805/9671/files/apc_back-_ups_xs_1300_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/76623524001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/79523649644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/najagadarono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/singapore_metro_rail_map.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 2

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_off00006599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6599 5564 bytes
SHA-256: 47657d99765abdfba4675dbb92c62cfa3405ebbb565bc192064d818e86b47a4c
font_01_sfnt_off0000786d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786D 10164 bytes
SHA-256: 9498ab7d18a1bba2ad8764c9245a725425919402c8a1c05b6e5356d7c47bdaf8

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