Malicious PDF — malware analysis report

Static analysis result for SHA-256 efda4686aec980dd…

MALICIOUS

PDF

45.5 KB Created: 2020-07-31 12:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 840c90adee59b5a8902df779701ba304 SHA-1: 18d95c5bdae2b2e6cfa3b8534cc5ea30467271bd SHA-256: efda4686aec980ddf25b4afbf4b79085e1be32dd9cca41fa730219088df62eae
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to domains associated with SEO link farms and redirectors, such as ttraff.com. The document body, though heavily obfuscated, appears to be a lure related to a guide, likely intended to trick users into visiting malicious sites. The presence of a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK further supports this assessment.

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=achtung+cthulhu+investigator+s+guide+pdf+download
    • http://files.cimtransformingwellness.com/uploads/1/3/2/7/132740435/lemikizolat-sapopidet-zarezavefid-vokusorir.pdf
    • http://files.kelleycarney.com/uploads/1/3/2/8/132814024/1911118.pdf
    • http://files.thejharrisdesigns.com/uploads/1/3/0/7/130776327/mofesu_fosagam_virixonagidu.pdf
    • http://files.kelleycarney.com/uploads/1/3/2/8/132814024/1911118
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/zamabarodaxawotumavire.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/napunajatojazadogimawaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/nolimotadurobaner.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/29802971681.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/wasub.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/48744968611.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/99834447262.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9939/files/kabadavugunuketen.pdf
    • https://cdn.shopify.com/s/files/1/0437/7736/0029/files/74816110866.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/1705455159.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/mipimujunazogedubifezut.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/41440712279.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/27382537955.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.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_off000072af.bin
d4bd3132706aeb5922148c5f47e6728d5dfb712ce9d6f46db75b5d75a0ac2347
pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 5440 bytes
font_01_sfnt_off0000853b.bin
49618f8873d48b01d2c700dd217e149aa285eab093608c1b1d68aed0fbea2764
pdf-font-stream PDF embedded font (sfnt) at offset 0x853B 10268 bytes