Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0623d53f2c9a1c…

MALICIOUS

PDF

37.3 KB Created: 2020-08-10 05:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930cdef913245c49c25b28c3c32ce5fb SHA-1: 3abafa16fd32863a04c38d0193ff971a79305791 SHA-256: cb0623d53f2c9a1c72f18a241e97cd7f10bad98d1ca118e1b692d9b7ca65cc1e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=business+process+outsourcing+the+competitive+advantage+pdf'. This URL is embedded within the document body, suggesting a lure to trick users into clicking it. The document also contains a large number of embedded external PDF links, many of which point to potentially malicious or unknown domains, indicating a link farm or distribution mechanism for further malicious content. 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=business+process+outsourcing+the+competitive+advantage+pdf
    • http://mixowewum.sethcarper.com/uploads/1/3/1/6/131637316/aef90b7609.pdf
    • http://files.alexisakwagyiram.com/uploads/1/3/0/7/130775644/35aff3a.pdf
    • http://files.planthealthcare-mortonarb.org/uploads/1/3/0/7/130740124/favugevod.pdf
    • http://files.protouchproduction.com/uploads/1/3/1/8/131859895/177477.pdf
    • http://files.pos-thinking.com/uploads/1/3/2/6/132682802/d1337271ce2.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/16760874858.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/86359414177.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/224_587_3670.pdf
    • https://cdn.shopify.com/s/files/1/0434/7111/0310/files/congenital_heart_disease_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/kapotevaxewujizim.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/dubulosagiwimepopizulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/nuzomekik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/babasetaxoguvivowe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/31153351184.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_off000044ec.bin
dd331295928c97abf6deaab85b3ac1a82e9a8e6c4a3568d255ea89a37d33d8b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x44EC 5528 bytes
font_01_sfnt_off0000578c.bin
b2e1b1b0b6c73d60eed07f0cbbc6c2ef9b040dc6f7e929c93d7babbc43207c63
pdf-font-stream PDF embedded font (sfnt) at offset 0x578C 10000 bytes
font_02_sfnt_off000079d5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x79D5 4324 bytes