Malicious PDF — malware analysis report

Static analysis result for SHA-256 395a696a0f43d8d0…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 04:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5848b70bda5f7bc756b12bf5f52ebb8 SHA-1: 31f705595f061edb4a52f8efc9bafe368cf97e2b SHA-256: 395a696a0f43d8d0469180d828229b7f52933d88e68179eb948600d4b245a85a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics and IOCs. The ML classifier strongly flagged this PDF as malicious. The presence of numerous external links, many pointing to Shopify domains with numeric slugs, suggests a link farm intended to manipulate search engine results and direct users to malicious content, likely for phishing or malware delivery.

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=atoms+molecules+and+ions+notes+pdf In PDF document text
    • http://zemanuge.healthybalancedbodies.com/uploads/1/3/1/0/131070420/fezatiwi_pexezurutar_temonuzupup.pdfIn PDF document text
    • http://files.morningslight.com.au/uploads/1/3/1/4/131438423/bedigaxen-juroloravur-wofizapupu.pdfIn PDF document text
    • http://files.fairfaxfletchersoccerclub.org/uploads/1/3/1/8/131871484/wosunolojutil-nejimivixeg.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/1/0432/1663/4016/files/46775204680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/7474623846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/mossberg._410_pump_shotguns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/lilidogagepifos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/aladdin_and_jasmine_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/ledutazoxojatekunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/rotevutolonisoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/fixaxatok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/rotem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4217/2062/files/business_case_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/boy_scout_handbook.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 4

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_off000076e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 5196 bytes
SHA-256: c5fd63e4513fcaa5d7ea509866a814c22d8407f52547ff6a4586d7a8d2588d8f
font_01_sfnt_off00008884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8884 10008 bytes
SHA-256: cddcef6351a2ff447c1ff493829d4c8da2419be44f11f052962f9a41532a4d5c

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