Malicious PDF — malware analysis report

Static analysis result for SHA-256 c503cad76892ea25…

MALICIOUS

PDF

45.0 KB Created: 2020-08-02 19:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63785fcbdc23e3fd01d527b7e2a74846 SHA-1: b3893384d5dba28404fbface00039f16d7dbf9ef SHA-256: c503cad76892ea25f0719eed9a96f697b1ef4fb06a457a3b82dae363863acdc0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to external PDF files hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=arduino+pulse+counter', is flagged as a malicious redirector. The presence of numerous external links, combined with the malicious redirector, suggests an attempt to manipulate search engine results or to lead users to 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.com/pify?keyword=arduino+pulse+counter
    • http://files.throatpunchchronicles.com/uploads/1/3/0/7/130739081/zetop_dowalixiravem.pdf
    • http://files.vfw1454.org/uploads/1/3/0/8/130874435/luroparizalegasof.pdf
    • http://files.movingmindsdance.org/uploads/1/3/1/0/131070212/momebikof.pdf
    • http://files.olneyfarmersmarket.com/uploads/1/3/1/6/131606325/gitimobamapup.pdf
    • http://files.livinghistoryevents.net/uploads/1/3/1/4/131453588/889380.pdf
    • https://cdn.shopify.com/s/files/1/0433/9489/1943/files/wawenawirelidotiwumugaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/donation_value_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/fubef.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/baxuxifisajojokuvig.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/94451087808.pdf
    • https://cdn.shopify.com/s/files/1/0430/9113/2567/files/84362486253.pdf
    • https://cdn.shopify.com/s/files/1/0441/3951/1960/files/vajofogosovadavofekufad.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/fiwexadefefamuzamaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/96843042886.pdf
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/49952247225.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/febilaka.pdf
    • https://cdn.shopify.com/s/files/1/0430/3867/1010/files/3453955736.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0517/files/nisutozovapupopibut.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/rakevef.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_off00006400.bin
a889f347a70a4030ba375655dbc8f7c065cb44f2988c4b33cff948e90a618b38
pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 4728 bytes
font_01_sfnt_off00007414.bin
7a95cf92b9e9d0de10218107e72687168a8c5d66569bfa6d88bd2200a1bd0535
pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 11084 bytes
font_02_sfnt_off000098e8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x98E8 4324 bytes