Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c38e67dc9f9ee50…

MALICIOUS

PDF

302.5 KB Created: 2020-08-17 15:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 038e6d46146b7992b74454ed1980bcff SHA-1: aa70aae3896d51a0552981ada97a90afbf1ca969 SHA-256: 7c38e67dc9f9ee503601298390f77bff21d708fd05989449bd3c1e0873596bb3
134 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector, specifically luring users with a technical topic ('Postgres timestamp format milliseconds') to click on a link. This link, https://ttraff.cc/pify?keyword=postgres+timestamp+format+milliseconds, leads to known malicious infrastructure. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • 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.
  • 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=postgres+timestamp+format+milliseconds In PDF document text
    • http://xurapuv.bscleathers.com/uploads/1/3/0/8/130874063/zaruwuwemupefo-jaletu.pdfIn PDF document text
    • http://files.christevan.net/uploads/1/3/0/8/130813378/83e2889fbc1d0a6.pdfIn PDF document text
    • http://fijesidad.pcovenant.com/uploads/1/3/0/8/130813979/povuvelovuwal.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/1/0432/6028/0982/files/dukekikavarabez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5107/2153/files/winston_mathematical_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1976/2840/files/35646996013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3171/9070/files/amino_acids_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/kenifuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/vitavorepuxubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/caperucita_roja_con_imagenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/angular_reset_form_dirty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9043/4456/files/61148460969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/games_workshop_warhammer_40k_rulebook.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 1

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_off00046c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46C94 5476 bytes
SHA-256: ccf1a31b0ff9da6beac3892ee2194a3dbb2a6e27497ed2ac541ea21a1418daac
font_01_sfnt_off00047f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47F19 13964 bytes
SHA-256: b002af3bcc890e5b15d4b011a6f021de061ed140b3012e4f8199d1388ab000a9

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