Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cbc59f551083fa3…

MALICIOUS

PDF

52.8 KB Created: 2020-08-19 05:41:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f2f6a21f1d9afc274ddbf89efa93ee9 SHA-1: f3c56d205d36651903f37f2a69c0062961a9c43a SHA-256: 8cbc59f551083fa3797ff9326c8be7bfe76ffff51ac686d421386ec36d5045bc
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'best android phone photo recovery app' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous links indicates a link farm or SEO poisoning attempt to drive traffic to malicious infrastructure.

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.com/pify?keyword=best+android+phone+photo+recovery+app
    • http://sezilejo.howardbands.com/uploads/1/3/0/7/130739590/b761916ab4cc3.pdf
    • http://files.balancemassagebyann.com/uploads/1/3/1/0/131069890/rujifabibi.pdf
    • http://files.score-lab.net/uploads/1/3/1/1/131163833/2aaab5cff.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/62227859410.pdf
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/o_reilly_python_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/valep.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/siwowopiraboxisikuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/14779754514.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/23213216784.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/food_inc_movie_sheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/42401112779.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/name_reactions_in_organic_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/82683603989.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/39846712928.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/chemical_engineering_books_free_sites.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/my_aadhaar_card_by_aadhar_number.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_off000083a9.bin
c22a7d492990aca7a6eb51c6f3c3864b0854aae38c32d3e9c33ffccb59a4beea
pdf-font-stream PDF embedded font (sfnt) at offset 0x83A9 5128 bytes
font_01_sfnt_off00009511.bin
e8feb829d7b6f83b6b051d26669cca3a8474263e292d84febf7f0b592ff6efbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x9511 10256 bytes
font_02_sfnt_off0000b833.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB833 4324 bytes