Malicious PDF — malware analysis report

Static analysis result for SHA-256 af76e22c1091dfcf…

MALICIOUS

PDF

45.6 KB Created: 2020-07-31 06:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 909dc01ef685462d0014cfd9e48d55c1 SHA-1: 2825d3c416a22a1e3ee203ae4103c7adb6a73531 SHA-256: af76e22c1091dfcf0df1129599c44ee962901f7f06f032f52bedd218ced67427
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links designed to appear as legitimate content but actually lead to a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary purpose is to redirect users to harmful sites. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which are hosted on benign platforms but likely serve as a camouflage for the malicious redirector. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the malicious links.

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=printable+inspirational+quotes+for+students+pdf
    • http://files.redondo-events.com/uploads/1/3/1/3/131383649/fbd18614eedcb.pdf
    • http://files.rockyview.studio/uploads/1/3/2/6/132695546/vewoduxuvisorexaf.pdf
    • http://files.traditionalspiritoutdoors.com/uploads/1/3/1/4/131437174/ffb435c2f7.pdf
    • http://files.tradition
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/paresovekibanulebamexari.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/9685722968.pdf
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/tuvaduwedakuvumexev.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/figavalefufodogiwukak.pdf
    • https://cdn.shopify.com/s/files/1/0433/7519/8373/files/66501861374.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/gewozig.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/kubutevajazugakawipofizi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/47215570224.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/87553144210.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/pofovewepule.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/livitejexeramu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/dopuzotodixujesunos.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/berixajaxipirenozov.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_off000075f0.bin
d3f19a43abdd757ae41439bd2f70187a395b32187ef48f5cbc374defb27ac55d
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 5184 bytes
font_01_sfnt_off00008780.bin
76f7a1025ca5b4e48925663b5862107028fa70958837884bb0510c306ed8c129
pdf-font-stream PDF embedded font (sfnt) at offset 0x8780 9836 bytes