Malicious PDF — malware analysis report

Static analysis result for SHA-256 652e7b542c4e301e…

MALICIOUS

PDF

52.9 KB Created: 2020-08-14 21:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8371b3fb51425b79c1d82242b75527d8 SHA-1: 6f13dba0c6d9b3c6dcf27583b91facb021b337cb SHA-256: 652e7b542c4e301eaad1271a1f988dcb29924bfd9738bd1164102128389fbceb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including a known malicious redirector, designed to lead users to external resources. Heuristics indicate this is part of an SEO link farm strategy, likely for phishing or malware distribution. The document body itself is heavily obfuscated and contains the malicious redirector URL, suggesting an attempt to disguise the malicious intent.

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.cc/pify?keyword=platform+77+williamstown In PDF document text
    • http://files.salernoprotectiveservices.com/uploads/1/3/1/6/131606407/gupulese.pdfIn PDF document text
    • http://files.trueembodiment.com/uploads/1/3/0/9/130969300/7937817.pdfIn PDF document text
    • http://mobajav.singingsawpress.com/uploads/1/3/1/3/131380213/00d70fa6a.pdfIn PDF document text
    • http://xapuza.sapritalia.com/uploads/1/3/0/7/130738914/dimuri.pdfIn PDF document text
    • http://files.harvestclevelandne.org/uploads/1/3/0/7/130776257/5128737.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/1/0429/5986/3959/files/los_arcturianos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/53631854673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7601/8585/files/maytag_centennial_washer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7750/9020/files/paxideguxodebawerojirage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0739/2413/files/encephalite_a_vih.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/jiwelakubugoxusenexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/92518424012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/46729938217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3229/files/brand_value_vs_brand_equity.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_off00009200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9200 5088 bytes
SHA-256: 6cc130af2ca55ecb8a9daff3e7e13e8e42da4042faa4601cd7277a71d63e619b
font_01_sfnt_off0000a348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA348 10472 bytes
SHA-256: f028604fadd7e72be9f204aaeeb6bf9a480fa3cf340c0007f39924a94bced1db

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