Malicious PDF — malware analysis report

Static analysis result for SHA-256 483f9b1bd3738c02…

MALICIOUS

PDF

57.5 KB Created: 2020-09-10 14:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 156dc89da5d670843c29e5280c1c05a8 SHA-1: 32ce17e277a59360e67a493837839124bd21aac2 SHA-256: 483f9b1bd3738c021070591c50037f93f4b78922f1a3ea3251ef72076da7dbc6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Employee reimbursement form template' and a URL that matches the redirector. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering, tricking the user into clicking a link that leads to a malicious site.

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.club/wix?keyword=employee+reimbursement+form+template In PDF document text
    • http://rususexuz.theconsciouscosmetologist.com/uploads/1/3/0/7/130775491/b590ed00b.pdfIn PDF document text
    • http://files.champagneholidays.org/uploads/1/3/0/8/130814397/futovuf_pumuxexuxexi_fefazugemob_nezodalatumet.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/1/0433/0687/7080/files/sogogetuxupoxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/20869749607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/bebop_2_controller_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0971/2033/files/bedside_crib_sheets_pink.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8930/5501/files/problemas_resueltos_caida_libre.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/140efa_7ab8d474d7264d809848f76edcf27478.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d32f78_7f9f37bafbb1447a80b9058f528728d7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/510a18_a97413b0164f49a8a5cf967105a8dcbe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/493135_81c9d081c1a0469a8d95215e268a85d1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6731/files/24164999168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1099/7921/files/piezoelectric_actuator_arduino.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_off00009332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9332 5244 bytes
SHA-256: e6dbd76c4a2a8fc2492769713a99f6a0a08228c187286156518176e4b97b034f
font_01_sfnt_off0000a4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F2 15988 bytes
SHA-256: 398483834e69b64701ba54503c1a9e009b1024dcc6df3ae784f1005c52750e60

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