Malicious PDF — malware analysis report

Static analysis result for SHA-256 a006e762d86ead33…

MALICIOUS

PDF

43.0 KB Created: 2020-08-20 12:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e00251c23b741a06dca0ff8679da6d24 SHA-1: 1078e0fb13e3bd1443b5e542c3dae7c75000ecb1 SHA-256: a006e762d86ead33ad0c0fbdcefcb13b8398fe90af330715fbba7c461d2c2a24
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common technique for delivering malicious payloads or phishing pages. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' directly indicates this malicious intent. The document body, though partially corrupted, contains the URL that leads to the redirector, suggesting the document's primary purpose is to trick users into clicking this link. The ML classifier also strongly flagged this PDF as malicious.

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=acids+bases+and+salts+igcse+pdf In PDF document text
    • http://files.leejeehee.net/uploads/1/3/1/4/131437491/97fde87.pdfIn PDF document text
    • http://files.holycrossboys.com/uploads/1/3/1/1/131163832/03805916e78ef.pdfIn PDF document text
    • http://bomutim.fmodyssey.com/uploads/1/3/1/3/131380600/tanezagudobuxe_mumavivak_maluro_puxoxujewuxav.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/1/0430/4742/0066/files/samuwixezejezuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/riwozodeteri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/receptores_asociados_a_canales_ionicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/dozojine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/ba_1st_year_english_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/5856/6044/files/dress_code_policy_for_employees.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62654677968.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 8

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_off000055bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55BC 5356 bytes
SHA-256: 72ad9a3254637208da69f9cc3a7c3f17d66723b9ed3f0c5cc06aad80c0c5efd4
font_01_sfnt_off000067fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FE 10016 bytes
SHA-256: 53f83cac44f03b72a5c8b404aca1122acaba3323629eff271ea291be9384ff29
font_02_sfnt_off00008a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A91 16100 bytes
SHA-256: 01e49661dbdd7b4823267156d85e4b6ddc25a6de2ac0af4d78c137cfa2b371b1

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