Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b367dd469e517f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 04:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30b9ec91a13a903474a8df677b38d6a7 SHA-1: ad9626f4d210d16dd5214dabc9e394f072060ec5 SHA-256: 95b367dd469e517f01a3868db0b76f36c83f94f4e2d6bcc3e0330a68331d9c27
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous URLs, with the primary one being a redirector to a site associated with malicious activity. This suggests the document's purpose is to lure users into clicking these links, likely leading to further malicious content or phishing attempts.

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=inductive-+logical+thinking%2528+cls+test+answers In PDF document text
    • http://pemugube.twentysixarte.com/uploads/1/3/2/6/132681556/e99fa.pdfIn PDF document text
    • http://files.amersoc.com/uploads/1/3/2/6/132681452/senegadopudoba.pdfIn PDF document text
    • http://files.spchevariecossette.info/uploads/1/3/1/0/131070846/3904695.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/1/0436/9262/1978/files/dusibamebikamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/sarivijizewuwijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/sirasulejusewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/4620529423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/33374035653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1687/8242/files/environmental_chemistry_baird_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/jewesiwazumegilonumuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4385/files/puleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/nopavigozal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/xagidoganinudak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/47585999410.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 1

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_off00006d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D45 5464 bytes
SHA-256: 686635fdcd4c6ec3c3b5e9661398c3d47dd1f669fb45b35480026d2531fd51a4
font_01_sfnt_off00007fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEC 10876 bytes
SHA-256: 6221fa442f76c24723711d264b6ddf4216fb5eee91205094fc5d4ee428cae9af

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