Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdaf8795c51078bd…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 01:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7b482fdd7a5398b9f6d9ab56ec299d SHA-1: 6a405daa3d1797b2ad28e1ad17e14120db44de2b SHA-256: bdaf8795c51078bd3857c78c450a0adf9fe8e0dd578c158b84ae06f535b59b1d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that appears to be part of a link farm designed to lure users with search-like terms. The primary malicious URL is ttraff.cc, which redirects to a Shopify URL. The document body contains garbled text but also includes the malicious URL and a seemingly benign search query.

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=best+gameboy+colour+emulator+for+android
    • http://files.babephotography.com/uploads/1/3/1/4/131409128/sagixepumajad_warobetot.pdf
    • http://files.littleegyptlyceum.com/uploads/1/3/1/3/131380627/29fde3e09.pdf
    • http://xatageku.neuracing.com/uploads/1/3/1/4/131438692/5bc3ee3d98.pdf
    • http://files.sems4acultureoflife.org/uploads/1/3/0/9/130969984/feregad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/zisew.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/86837285883.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8822/files/benutijumib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/asientos_contables_peru.pdf
    • https://cdn.shopify.com/s/files/1/0432/6562/2184/files/15635600163.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/mubimukopipavejaxixerinif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/mibirojiwafopadojexa.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/5929370034.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_off00006db1.bin
45c13e61e7812ce4b80af90c62939d433dfe58888f4b33fe77b2ee3165833bee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 5632 bytes
font_01_sfnt_off000080c5.bin
091ccd6174f441f8a93f92518a385f8f2bb880401a1d324d457fd0162fc74819		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C5 10308 bytes

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