Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2374e0ad19006b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 08:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d307e47736eaf45aa5533c2735807f1 SHA-1: 91b1ebce41a12f2dfdadb24a0aea56e89c88f07b SHA-256: 2c2374e0ad19006b1ff2eb721f82fa449a74be5b36ff4db64e6293d747564af1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised with a keyword related to a popular movie. The document body, though heavily obfuscated, contains the same malicious URL and several other URLs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering through deceptive links.

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/wix?keyword=deadpool+2+movie++in+tamil+isaimini
    • https://cdn.shopify.com/s/files/1/0440/3740/6870/files/isaac_physics_answers_hack.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/fekuvedosexuzowipazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0857/9993/files/5337339429.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/background_images_for_photoshop_free_psd.pdf
    • https://static.usrfiles.com/ugd/b8c837_3812a23079d74b67bbe662700c4bc0bd.pdf
    • https://static.usrfiles.com/ugd/6290de_cbc23abe4eda48ef9dd94e6108214281.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/cbse_class_10_sample_paper_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/koloferav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4248/8998/files/74533418287.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/49642463248.pdf
    • https://cdn.shopify.com/s/files/1/0464/8389/8520/files/fotupam.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
stream_004_off00006368.bin
747950630d5dbc64fe9567a382e8672c00f96549bb1b8a5a0f1b7bcf1387dbe1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6368 13644 bytes
font_00_sfnt_off000051be.bin
9983949874af10d0f1e2e3eebc5f8d03973c7b1adbb40c1d62a78cfebefc8501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51BE 5200 bytes
font_02_sfnt_off000084ac.bin
0dd65cf021158234f8d15274fb650ec345272b18f4e55375f5dae20a228ba736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AC 10760 bytes

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