Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5851e06ecb981b…

MALICIOUS

PDF

61.3 KB Created: 2020-07-31 23:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bffcb91e764f56df8b5458daff262284 SHA-1: 7b2cb3b081fd8bb8c1c30ba8013f5c6acad9eb43 SHA-256: de5851e06ecb981b5a4e2e84e8e2a688e074f64fc57c4ec94cc2258229cabb5f
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=hive+druid+integration', which is flagged as malicious. Another URL, 'https://cdn.shopify.com/s/files/1/0430/2651/4077/files/21047500319.pdf', is also present and appears to be part of the link farm.

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=hive+druid+integration In PDF document text
    • http://files.gatewaycathedral.com/uploads/1/3/1/4/131453214/diloroxiwefudadav.pdfIn PDF document text
    • http://files.sandrawadkin.com/uploads/1/3/1/6/131606346/supeluveze.pdfIn PDF document text
    • http://files.thefictionwritersjourney.com/uploads/1/3/1/3/131383648/c074b6b0e3.pdfIn PDF document text
    • http://files.flyingleapimprov.net/uploads/1/3/1/4/131407691/236ba8dfb3aa2.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/1/0430/2651/4077/files/21047500319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/nofava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8063/7861/files/fivaditivubawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/tivovufid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/40876443440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/88503294770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/19666392853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/28614121194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/47119208875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/ravujopek.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 5

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_off0000a492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA492 4804 bytes
SHA-256: 0983c11ceafa62a40101bd8b67cbe44bd462afe6b79fae7ae01abc1dfd906720
font_01_sfnt_off0000b4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FC 16484 bytes
SHA-256: 347edbf5efc2bd6e6dac12b8994fbc13a81c72bf5f7417a0c28ab2b79f4d6237

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