Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4d15d10c4f04d9…

MALICIOUS

PDF

41.2 KB Created: 2020-08-04 00:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 868b6cd41fb0f02fb202dd87ae4699fd SHA-1: a7fb43fab2b1d30505b4983342bfa627e0f7f9e7 SHA-256: aa4d15d10c4f04d94600bb49e59a3d4d6945f6763f7a3f5bc556c3b2e3e4e325
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. This suggests a phishing or redirection attack aimed at leading the user to malicious 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=amenorrhea+adalah+pdf In PDF document text
    • http://files.masjidfreehaven.org/uploads/1/3/0/7/130739971/1161561.pdfIn PDF document text
    • http://files.thesecretbrowclub.com/uploads/1/3/1/0/131071114/da838a.pdfIn PDF document text
    • http://files.herbyagnew.com/uploads/1/3/1/3/131380305/aad93126db9d351.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/1/0431/2442/4853/files/zapetonexefakipafirasub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/2177309800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/python_snack_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/88528168909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/riminugipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/point_and_click_mystery_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/21624192882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/33491036550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/dabevawefarikikumifaloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0818/8839/files/80560379061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/gumodiderusodebiwowi.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 6

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_off000063ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 5092 bytes
SHA-256: 793935cc5906f5ce1ad30d815933fbe77c80a3be88da2ed0eb014485f5175963
font_01_sfnt_off0000750e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750E 10360 bytes
SHA-256: 50982d60ab6a86281928d538de2eb0ef3dae551269d018ec906b9e43f4979864

Open this report in the interactive analyzer, or submit your own file for analysis.