Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c2b9b568a776ae0…

MALICIOUS

PDF

46.0 KB Created: 2020-08-10 11:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de5bf57adc59016ea8728e9a053a9c0c SHA-1: 4d623ceccd633747841b0599eafb28b084f205c7 SHA-256: 3c2b9b568a776ae0da9ca8b3928842dd75a24b4c170c555bca1592a39a4d8799
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to PDF translation and includes the malicious URL. This suggests the document is designed to trick users into clicking the link, likely leading to a phishing or malware download site.

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.cc/pify?keyword=traduction+fichier+pdf+anglais+vers+francais
    • http://wifewowa.drdavidzuniga.com/uploads/1/3/1/4/131453323/tedaxufe.pdf
    • http://files.supertreegnome.com/uploads/1/3/0/8/130873794/68f47d5bbac5a1.pdf
    • http://files.shoestotheworld.org/uploads/1/3/1/8/131871954/dimironuj_retifupubafuk_fagixe_tutosagok.pdf
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/digital_communication_proakis_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/fundamental_financial_accounting_concepts.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/mtg_arena_installer.pdf
    • https://cdn.shopify.com/s/files/1/0437/8122/6657/files/21752386760.pdf
    • https://cdn.shopify.com/s/files/1/0443/3159/7980/files/mevogux.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/kapigerekuta.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/midetorisameruzuvak.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/48810312598.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9670/files/56046136558.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.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_off00007014.bin
ff46a65a86a9546cb89b6da1ca76ee8fd46cdeddf183894e145b64689c00ceb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 5424 bytes
font_01_sfnt_off0000828e.bin
73040dbaa3be946f3fab429fbc2560197c2ae89008a716caf30aa8c8ba9fe85a
pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 12312 bytes