Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6d36b5228052b3…

MALICIOUS

PDF

47.4 KB Created: 2020-08-06 08:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de1f6e9330c26d0dc4ac8eb3b215f0f SHA-1: b6a6bfffe1469b8020330cd811856d4554c85ec9 SHA-256: 4f6d36b5228052b3c8bebf455f5d24c81c8518f52f30fe2158f7b6087f7d6051
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious sites. The primary redirector URL identified is ttraff.com. The document body, though heavily obfuscated, contains references to academic citation styles and the wkhtmltopdf tool, suggesting a deceptive lure.

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/pify?keyword=how+to+cite+a+pdf+mla+purdue+owl
    • http://bigepo.teachingandlearningoutside.org/uploads/1/3/0/7/130775982/ragudo_fufuwuk_kibilumuworire.pdf
    • http://bodidu.campbellcareerdevelopment.org/uploads/1/3/1/4/131437736/xapexofibekof_tesijovitebixan.pdf
    • http://files.marksatin.com/uploads/1/3/1/3/131398195/towep_wilen_patuxakaf_soduxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/47407249415.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/xemivofonew.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/vogixosamasifuvidafa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/lafolotimusofevezaruziwel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/cashew_nut_production_in_tanzania.pdf
    • https://cdn.shopify.com/s/files/1/0433/6209/1167/files/13901099355.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/11374553041.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/36109018019.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/android_keep_screen_on.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/ruwokujasifaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/clinical_biochemistry_test.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d37.bin
c4c2313afc7c2e28a831919677af6f0a4dbd00c1c84178091cebb60064a3d8ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 4952 bytes
font_01_sfnt_off00007e1e.bin
cd438181f055f8f55b30c1f9653d899edcab2933c7dc2075f25324e8f1bde2e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1E 10812 bytes
font_02_sfnt_off0000a2cc.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CC 4324 bytes

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