Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef7a5e77a8f289bc…

MALICIOUS

PDF

41.4 KB Created: 2020-08-08 15:38:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c5aa78e9bb3bc105ee0c46c49abf7a7 SHA-1: fd9220c44ee1d7f358f0e714f1b00bf85ae8c8b6 SHA-256: ef7a5e77a8f289bc4f24819b87cf85462695daa350c4e59b312949afb9c81b3d
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including one pointing to a known malicious redirector. The document body text, though corrupted, contains the URL that is also present in the malicious redirector link. This suggests the PDF is designed to trick users into visiting malicious websites by presenting them as legitimate resources.

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=accidental+death+of+an+anarchist+critical+analysis+pdf In PDF document text
    • http://files.1stmiddletonscouts.com/uploads/1/3/0/8/130813362/129863.pdfIn PDF document text
    • http://gikagagip.15landsdowne.com/uploads/1/3/1/3/131380845/faguwuxenawanasobile.pdfIn PDF document text
    • http://files.oceanaparkwelshstud.com/uploads/1/3/2/8/132815367/3165856.pdfIn PDF document text
    • http://files.maevemccarthy.net/uploads/1/3/1/4/131453559/1e24a0578f7de2.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/1/0433/6363/1272/files/36538921550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/19058644311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/tozog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2336/files/automate_the_boring_stuff_with_python_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/sujid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8389/6734/files/jitufutajubasogasitegoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/sexibasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/doxalipejiwulin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/59911831707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/49614574890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5825/6286/files/xawutofigoneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/71196458879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/jesavaxazepademis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6413/9674/files/48855160265.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_off0000632d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632D 5336 bytes
SHA-256: fc2332b3f23e0ec52840cb3c1a101219d20119744a8c11b0fe5a72ad12781e2b
font_01_sfnt_off00007558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10168 bytes
SHA-256: f28029800900a139ce7deba9426a864107ae6cd7905051dd31fe304107793e12

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