Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c33012650c7666…

MALICIOUS

PDF

46.5 KB Created: 2020-07-09 15:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 709b11bc03b18e1c5a3e2e909989ca50 SHA-1: 4e327e9a3e7c5665aebe269485f684308962391e SHA-256: c6c33012650c7666d4833c096622fa046abac7c264343eff99813a8752c65a59
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm structure. One prominent link, 'https://ttraff.com/wb?keyword=keithley%206517a%20service%20manual', is identified as a malicious redirector. The document body, though partially corrupted, also contains this URL and other PDF links, suggesting a social engineering attempt to trick the user into clicking through to a malicious site. No scripts were extracted from this sample.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=keithley%206517a%20service%20manual In PDF document text
    • http://files.gracechapelclg.com/uploads/1/3/1/8/131871762/ziwesusotidetinodofu.pdfIn PDF document text
    • http://files.bentonumc.com/uploads/1/3/0/9/130969855/1061627.pdfIn PDF document text
    • http://files.jobmasterrental.com/uploads/1/3/0/7/130776033/jinufurip.pdfIn PDF document text
    • http://files.therubythroat.com/uploads/1/3/2/8/132815004/fibanapobuvidufi.pdfIn PDF document text
    • http://files.comedyblockpartyent.com/uploads/1/3/1/1/131163564/0d99906252.pdfIn PDF document text
    • http://files.footankleresource.com/uploads/1/3/1/4/131454238/1935445.pdfIn PDF document text
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdfIn PDF document text
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdfIn PDF document text
    • http://files.explorestanton.com/uploads/1/3/2/6/132681343/kozirikemadave_boteguzoba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ladubine.files.wordpress.com/2020/06/jojazifitopofixaz.pdfIn PDF document text
    • https://pasinegunuk.files.wordpress.com/2020/07/88693753218.pdfIn PDF document text
    • https://sujopaloruxi.files.wordpress.com/2020/07/62687256321.pdfIn PDF document text
    • https://benozijef.files.wordpress.com/2020/06/53195796917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24370467333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36149341097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.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_off00006b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4E 5352 bytes
SHA-256: 8a462766845a7230db1718f040ea9bada59f8cd5add8d89339ab1a1c6a18247a
font_01_sfnt_off00007d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6B 15360 bytes
SHA-256: 1cef19be65d8c9876cbd1e98452c408861283ca461bd33dac89f432e09c81635

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