Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4c4e292984a5ba…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 02:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e11d0531b0d7eb45fd9c9aa09ed02efb SHA-1: 71968826d86c2228cb64781f2733c2ba3540b27b SHA-256: 7a4c4e292984a5ba33d6c317a7d6a09b723b23968843c52ada7e90d298e48380
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, masquerading as a study guide, but ultimately redirects to a malicious link farm at `https://ttraff.ru/pify?keyword=ceh+certified+ethical+hacker+study+guide+kimberly+graves+pdf`. This behavior, combined with the ML classifier's high confidence score, indicates a phishing or scam attempt designed to lead users to potentially harmful content. No scripts were extracted, but the embedded links are the primary vector for this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ceh+certified+ethical+hacker+study+guide+kimberly+graves+pdf In PDF document text
    • http://files.patradolk.com/uploads/1/3/1/4/131437423/8795140.pdfIn PDF document text
    • http://kafef.altoimaging.com/uploads/1/3/0/7/130739024/30451.pdfIn PDF document text
    • http://files.apartmentwasherdryer.com/uploads/1/3/1/4/131406827/6950515.pdfIn PDF document text
    • http://files.backstagenb.com/uploads/1/3/0/8/130814535/6225992.pdfIn PDF document text
    • http://files.wirralcpd.co.uk/uploads/1/3/2/6/132681823/gewir_fuvisobob_vewugejevukid.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/1/0431/0673/0144/files/30489859788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/88345884417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/bubavubeteragiwodal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/rise_of_the_tomb_raider_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/laundry_shop_business_plan_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7036/4571/files/73430256557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8918/0310/files/windows_7_telemetry_updates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/50731360276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/tonapaxutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7183/9135/files/39289420812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.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_off00005f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 5840 bytes
SHA-256: e69eee8d29df7739ca650bc36539ae1b2084d71a55916ba0894438ea39eb7244
font_01_sfnt_off000072d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D6 10404 bytes
SHA-256: b77cb97f86a4e86a76c02014aee0ba0b52cebd534ac4faa799194cb38567effa

Open this report in the interactive analyzer, or submit your own file for analysis.