Malicious PDF — malware analysis report

Static analysis result for SHA-256 c24a7b683f678e4b…

MALICIOUS

PDF

39.9 KB Created: 2020-08-13 22:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d72e548395af29ad830acb57179f4b69 SHA-1: 0848548760ed0a1c7e4788c82fb95f7e3c65799a SHA-256: c24a7b683f678e4bb0ea014d0a38d0518b8e5d33de1543c60ef77fac08c6aef6
154 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'simple risk management plan template excel' and includes the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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/pify?keyword=simple+risk+management+plan+template+excel
    • http://rojifa.newriverknockouts.org/uploads/1/3/1/6/131636725/kovupatav.pdf
    • http://files.celestecollegeofintuitivemassage.com/uploads/1/3/1/4/131437532/852d1.pdf
    • http://lusuzami.peaceablemarket.com/uploads/1/3/1/4/131408159/5bd95f6dd.pdf
    • http://files.my-pleiadian-this-n-that.com/uploads/1/3/0/7/130740190/2163406.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/phonetic_symbols_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/basic_conversation_questions_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0448/3871/5552/files/epson_xp_200_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/48507411645.pdf
    • https://cdn.shopify.com/s/files/1/0437/4167/5685/files/juzif.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/winepadedazesusekina.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/gaxavibijesovukawemut.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/international_auditing_standards_issued_by_intosai.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/wuvututi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2171/3060/files/declaration_de_chiffre_d_affaire_auto_entrepreneur_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/nazig.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e60.bin
e2fa73a43d22c72d2375a382571289cebf2cfa06beee80b7ee8b15f5ad830b02
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 5488 bytes
font_01_sfnt_off000070ef.bin
05e437afa6ab67b39cc446efff8e4d7e173ca4d3bd1ab55e5b2e4933bc7ed4d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EF 9912 bytes