Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a786e81af2cd1b…

MALICIOUS

PDF

39.2 KB Created: 2020-08-08 21:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2255cacfed5cc932687c09284a5349f SHA-1: af05e094052b16db8976c37e2400b823f875d83f SHA-256: c6a786e81af2cd1b9084ff7a0f4cfeca424132562e4eb8a4cacc21ab87e3dae0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that is disguised as a download for 'The Economist' magazine. The ML classifier strongly indicated maliciousness. The document body and embedded link structure suggest a phishing or social engineering lure to redirect the user to potentially harmful content.

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=the+economist+july+7+2020+pdf+download In PDF document text
    • http://files.pattidunne.com/uploads/1/3/0/9/130969764/4934665.pdfIn PDF document text
    • http://files.ntspruikle.com/uploads/1/3/1/3/131380591/678d88743e347ea.pdfIn PDF document text
    • http://files.syxgems.net/uploads/1/3/0/7/130776206/nubatiwilofa_jamavenefazibip_mixagipebokaku_savewunoforipad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/games_for_teaching_vocabulary_in_the_classroom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/vikebejod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/89705618746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7702/5446/files/89018441459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/70895004563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/94736198685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/zunilemilifowovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/error_assignment_to_expression_with_array_type.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/powopasotekemitifel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/12668537771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/physical_therapist_assistant_exam_review_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4034/8059/files/word_count_in_r.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBC 5756 bytes
SHA-256: c7b69ff3c2338818a8377ea544fea1076324ac84188824336e3c608f4b1725ef
font_01_sfnt_off00005f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 9976 bytes
SHA-256: 2482521df2b9a21a72907f5ce2d45ee3a4754b1ed21966431bdf3978bf5d7067
font_02_sfnt_off00008166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8166 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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