Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0a8d5e0a9be2d1…

MALICIOUS

PDF

45.0 KB Created: 2020-07-29 18:13:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8f28ed3025ae5f36e5f3554bd11c20c SHA-1: f2a3a7df59ef001d77f191cbcc18cf3fe9917c95 SHA-256: ec0a8d5e0a9be2d12ca032f2cadb494662782d31614ed2b773374fc554ccc4d5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of outbound links, with the primary one being to 'cdn.shopify.com'. The ML classifier strongly flagged this PDF as malicious. The embedded document body, though heavily obfuscated, suggests a lure related to a 'ductility test of bitumen pdf'. The combination of these factors points to a malicious document designed to redirect users to harmful sites.

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.com/pify?keyword=ductility+test+of+bitumen+pdf In PDF document text
    • http://files.gracechurchchanute.org/uploads/1/3/1/3/131380889/ruzoposusaxotaw.pdfIn PDF document text
    • http://files.bajakosher.com/uploads/1/3/1/3/131381901/nilimad-lefufes-bekuxenodexuno.pdfIn PDF document text
    • http://files.mrsjonesandmrssmith.com/uploads/1/3/1/4/131454766/3732338.pdfIn PDF document text
    • http://files.km1922photography.com/uploads/1/3/2/6/132681307/ce5a4812109ea5.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/1/0429/5252/3929/files/91810798409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/kisamulugawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/gosozovijopifexoxoxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/85958195183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2620/3302/files/13529971807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/12132559898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/85242715553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/40980513302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9953/6040/files/45536920677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/javutibekib.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 2

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_off0000734c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734C 5120 bytes
SHA-256: 8f682ddd7dda7c4f23bb2b4d0d29c46fd526743e9892048addb989d99e3fa14e
font_01_sfnt_off000084a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A5 9980 bytes
SHA-256: 332fda1c6473d8f129c648bb9e60a66f22a5cd0669db8d59f14408f98f24c874

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