Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff75bf6b2894244…

MALICIOUS

PDF

46.4 KB Created: 2020-08-10 11:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53979fcab3f67613ed8aeb8515290015 SHA-1: 91ae35ad09f42e0b56480efa7c250d142cea9045 SHA-256: bff75bf6b2894244f1b93ba92e1f75ad496e775e3d9b21e9b051cd631561d0b0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to external sites. One of these links, 'https://ttraff.cc/pify?keyword=cadbury+report+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. No scripts were extracted from this sample.

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.cc/pify?keyword=cadbury+report+pdf
    • http://files.thewhitefamilyreunionisaiahcarrie.com/uploads/1/3/1/3/131384113/5251865.pdf
    • http://files.americasschoonercup.com/uploads/1/3/2/6/132696274/9862042.pdf
    • http://diwup.thisbostonlife.com/uploads/1/3/1/1/131164250/lujogujigo-jezutegago-mizamonazowi.pdf
    • http://files.gittco.com/uploads/1/3/1/6/131606631/bewazewodixek-lanova-jekaxawotum.pdf
    • http://files.maplegrovepta.org/uploads/1/3/1/4/131407445/mowuwesuzevow.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/zinon.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/88570668720.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/definicion_de_dificultades_de_aprendizaje_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0433/8846/9411/files/36071301590.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/gisewov.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5190/files/nekulexasimiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/namegumebuxogibomixipuzu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/65245497500.pdf
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/6139723577.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/rugadoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/3501/7895/files/intellectual_property_assignment_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0437/7552/5022/files/migafosimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/xepudupodibowovesov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/81398903836.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_off00007736.bin
da06731e1acd116c581a009ba50a282b48da0620bfbe466c5db526e97db84a94
pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 4972 bytes
font_01_sfnt_off0000882c.bin
9b00860056c944753192fe6910c65953bda4d2dcc5b1d082e2ab1cef128ffb27
pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 10660 bytes