Malicious PDF — malware analysis report

Static analysis result for SHA-256 26dff756f2ddda48…

MALICIOUS

PDF

51.9 KB Created: 2020-08-07 13:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a26e3e53dc94496f15bd93b37d8359 SHA-1: 2d74367912b92aa33ce6b1d758ddf3a25ddaf8a1 SHA-256: 26dff756f2ddda484905c27ef5acf2f3298283cf09077e8569ef9057cadb0218
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service (ttraff.com). The document body, though heavily obfuscated, contains text suggesting urgency and a link to the malicious redirector. This indicates the document's primary purpose is to trick the user into visiting a malicious URL, likely for further exploitation or credential harvesting.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=postnatal+assessment+format+pdf
    • http://files.golden-meadowlark.com/uploads/1/3/1/4/131408899/gesaxava_vazamowaxarexu_bazozatevag_gimusipebopufo.pdf
    • http://files.noseyroseytiedye.com/uploads/1/3/1/4/131437005/geriwumibemo-farafavitav.pdf
    • http://files.grayslandhoa.com/uploads/1/3/0/7/130740490/zapomeko-tumit.pdf
    • http://files.livelyoakcavaliers.com/uploads/1/3/2/6/132682030/29392e73df8.pdf
    • http://files.evelandfarm.com/uploads/1/3/1/4/131436971/93088aafe1eb3.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/76906637386.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/zozamosalut.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/rider_waite_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9376/1941/files/50272995364.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/xokowobugemasuwukuxemumen.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/44930665365.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/kuminobakapusijazatu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fagenovag.pdf
    • https://cdn.shopify.com/s/files/1/0435/7285/4939/files/lua_c_roblox_scripts.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/sokuxes.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/gudivizosalefetanumani.pdf
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/pevufuzomegate.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/43807372201.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_off000080b8.bin
15b2dea2227c3f7da7573f40268104f5c1fa4218018386e781407d9aad3de811
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 4928 bytes
font_01_sfnt_off00009153.bin
378a43036f6459d749ce0637c292bb26dea2e80022fbfca49b078ed4e7c27ef2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9153 10232 bytes
font_02_sfnt_off0000b41e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB41E 4324 bytes