Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7cf04fae0f44db…

MALICIOUS

PDF

42.7 KB Created: 2020-08-30 06:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a6310fd0bfce2ef24f67eb71ad3695e SHA-1: ed33dcb326a2bb76b9959b13ddef196abfdd1251 SHA-256: 4b7cf04fae0f44db2314c43a139d969b61e0b5b071f064ba769b5dc7ec8f8f1f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to a boxing match and a URL that appears to be a lure. This URL redirects to a known malicious domain, suggesting the document's purpose is to drive traffic to malicious infrastructure. The presence of numerous external PDF links further indicates a link farm strategy.

Heuristics 3

  • 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.
  • 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/wix?keyword=adrien+broner+vs+marcos+maidana+full+fight+video
    • https://cdn.shopify.com/s/files/1/0435/1682/1663/files/galvanised_steel_sheet_near_me.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5271/files/fagijegawafikelimobiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/cg_new_dj_remix_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/20662127335.pdf
    • https://cdn.shopify.com/s/files/1/0430/2874/2298/files/31517573697.pdf
    • https://static.usrfiles.com/ugd/33a2e4_3b09c0dc9d064520acf57fcee67192a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_1351572647e1432a8131b2b08e7c330b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8657b16b46ef4a44aa561a4287601a24.pdf
    • https://static.usrfiles.com/ugd/865d50_bb6d181c3f1f474d9c76bb132355a356.pdf
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/vanevodukuwolugisoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/52381730085.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.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_off000066c3.bin
94d7d56239daf8158252a27a31b0435ab8e26c711d94063db2def7c103aa617e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C3 5624 bytes
font_01_sfnt_off000079b9.bin
c987312bcd77a5bd88101510facb1c494ce78b5182edc62b90390da750b691bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 10628 bytes

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