Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6499d6a4cdebde…

MALICIOUS

PDF

45.6 KB Created: 2020-08-05 09:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e224d9d5d1781e26735ed4124a2435f SHA-1: 610604d93e8a7b28b4dcdd5d7a6fca058cc1b65f SHA-256: dd6499d6a4cdebdeac97ce7ed978f4bc643c2ed8ef1a29fa7cd033128628c2a8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for "cost accounting basics pdf". The primary malicious IOC is the redirector URL, which likely leads to 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=cost+accounting+basics+pdf
    • http://files.theoec.ca/uploads/1/3/2/6/132682342/vimut-pewefimejoxetit-vuxuwu.pdf
    • http://jafabebi.grantcountyinfair.com/uploads/1/3/0/7/130776499/ranitij.pdf
    • http://files.digitalwalestec.com/uploads/1/3/1/4/131437005/4695606.pdf
    • http://files.jenniferjoseph.org/uploads/1/3/0/7/130775634/44375fb202f.pdf
    • http://files.hireaechouston.com/uploads/1/3/1/8/131856276/ponogibopix-dajobokig-tefiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/67943419461.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/kememexera.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/42105250114.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/zorba_baton_rouge.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/saduxakenaroximewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/sowobilidudunofogom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/wuxapemap.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/regosemomigevizavuxoketa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2325/files/64816705668.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/jomizal.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_off00006bd6.bin
0948277eada4f625c9d900a275e7c31dffd936d32fddd1b02890b59cdcdf1716		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD6 5240 bytes
font_01_sfnt_off00007db8.bin
31a127e29147097295670dd7421ba65190fd3c7902e5afc154cd6055c6ab6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB8 14068 bytes

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