Malicious PDF — malware analysis report

Static analysis result for SHA-256 df58cff6b49b1c5a…

MALICIOUS

PDF

94.0 KB Created: 2020-08-09 00:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9450a987dcd6be23d4617cb3fc6755b5 SHA-1: a92bdc6c01d8a2bfcc6898853ab36332e0f33366 SHA-256: df58cff6b49b1c5aa15a3d745a8500c8ac87f7083aa70a6b08685960742edbb5
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=dua+e+astaghfar+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, also contains this URL and another Shopify URL, suggesting a coordinated effort to redirect users to potentially harmful sites.

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=dua+e+astaghfar+pdf
    • http://files.mypomskies.com/uploads/1/3/1/8/131872021/zovobopa.pdf
    • http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.pdf
    • http://files.englishywps.com/uploads/1/3/1/3/131383207/bigile.pdf
    • http://files.parklanestablesponyclub.com/uploads/1/3/1/0/131070434/fad7275acc0.pdf
    • http://files.knackpack.studio/uploads/1/3/1/4/131453206/52d211e9.pdf
    • https://cdn.shopify.com/s/files/1/0430/2811/9706/files/74477434554.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/behavioral_couples_therapy_for_alcoholism_and_drug_abuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/99193855702.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/sijupuvezapisojolakaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/kobipejirenawidugajarebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/5321037417.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/93387945244.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/60331048796.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/jobs_vocabulary_list.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000116b3.bin
12dce43bcf2a0f1a398bfe67d0c71233cc145c178cebf653d587a726f79679d8
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x116B3 32888 bytes
font_00_sfnt_off0000d32b.bin
813f3567c8427bd8dbf8dfd0a51cee25eb0d64b864f77a48d766854a42030945
pdf-font-stream PDF embedded font (sfnt) at offset 0xD32B 5272 bytes
font_01_sfnt_off0000e51d.bin
8e6c6febee6cbb040cbb38d2f7c503d062ce0966597a02f8e5f0c099e3402988
pdf-font-stream PDF embedded font (sfnt) at offset 0xE51D 16076 bytes
font_03_sfnt_off00014ed6.bin
ca321649226e408772b6e3b8615494c4de8fde3c8ae36265e8935e12b5780411
pdf-font-stream PDF embedded font (sfnt) at offset 0x14ED6 7848 bytes