Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c1e3c331f0a1eb…

MALICIOUS

PDF

65.6 KB Created: 2020-08-17 08:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a63ddfa781a16e35697478c2471e00a SHA-1: 8172b5cde0b52d19a0cff25a60e13b0c6b511b7b SHA-256: 00c1e3c331f0a1eb90905c956caee614a0ffb63e47074db70a6e05fa4b074310
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Egyptian cotton 800 thread count sheets' and a URL, suggesting a phishing or scam lure. The presence of multiple PDF link farm heuristics indicates a coordinated effort to distribute malicious links.

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=egyptian+cotton+800+thread+count+sheets In PDF document text
    • http://nosewetiv.24hour-electricians-bridgend.co.uk/uploads/1/3/1/6/131606490/zuduxikarav-jexaf-dekepuwazumuset.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/1/0437/6041/8970/files/xusovadodexelaropizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/nakuwatunagoxopir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/cours_math_1_bac_international_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevadijuxirefasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/bbbee_sworn_affidavit_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/zezaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/chanakya_neeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/social_psychology_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8833/0396/files/xosatawepete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/fetuvade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8120/1819/files/42950593180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/acrylic_color_mixing_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/gejixugilamomukosodu.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 3

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_off0000c1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AF 5696 bytes
SHA-256: 3de953b92a936572e145612d65f101893ad155e4aeb29fecab30a9cf18b17a74
font_01_sfnt_off0000d50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50E 10604 bytes
SHA-256: 19783616fb2227aba6e8cc45eb641815fc46f9947f29750f5963736e88915761

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