Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b579c856298fde…

MALICIOUS

PDF

47.4 KB Created: 2020-07-28 17:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5478d3e6fb16ecb579f3529b191d5f55 SHA-1: b8bb0ac31e9cce6d5f585ac5f29db62d9bbaa89a SHA-256: b6b579c856298fdefdea887655dc7fa9b175da3053f2b8c19798c0434e8ae547
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically flagging a link to a known malicious redirector. The document body, though heavily obfuscated, appears to reference 'Valentine's day date sheet', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.ru/pify?keyword=valentine%2527+s+day+date+sheet
    • http://files.yourcaringcommunity.ca/uploads/1/3/1/3/131382239/7f98349f55576.pdf
    • http://files.kdgdistribution.com/uploads/1/3/2/6/132682936/9713459.pdf
    • http://files.successchoices.ch/uploads/1/3/2/8/132814071/jivafepi_sobiberalef_nebirovivom.pdf
    • http://files.aminalake.com/uploads/1/3/1/3/131379246/4640579.pdf
    • http://files.multifaithfest.com/uploads/1/3/0/7/130739238/mizokizomogivez.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/lavugevabiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/dijebudusulowaxif.pdf
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/37995375295.pdf
    • https://cdn.shopify.com/s/files/1/0429/0428/9439/files/80822507739.pdf
    • https://cdn.shopify.com/s/files/1/0428/5834/8700/files/nanorujevoritos.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2918/files/rajakavejovolugidugimiviv.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/gumolizododezilas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/28052652863.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/72089759301.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/wipatetuzasizedonomidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/41801918554.pdf
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/suzeguwili.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/
    • https://cdn.shopify.com/s/files/1/0429/0428/9439/fil

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000740e.bin
92121dd0706694844bd7febf39f64ee743185dba842f15a38bf3c4b85b2ddb4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 4596 bytes
font_01_sfnt_off0000839f.bin
73983ccd477f0e4c07634362c0f9f13a23cea415a26bff37f7f125d59a681190
pdf-font-stream PDF embedded font (sfnt) at offset 0x839F 1936 bytes
font_02_sfnt_off00008ce2.bin
f749a6791d94ef1222dd57ff28a63040429476eae6cb55c8c33e2dfc19bae275
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE2 10272 bytes