Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c6e2ae1fe99e9a…

MALICIOUS

PDF

54.4 KB Created: 2020-08-26 23:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5595106020a20d349624be43c1552a6 SHA-1: 15ad50f7bc4980150565e49abf7ad303aae34b45 SHA-256: f5c6e2ae1fe99e9a6365c71d707314cc3e6840320dc1ef71aaef5cd8095871b9
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify but point to potentially malicious PDFs. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to malicious infrastructure via the 'ttraff.com' URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=saat+kavram%25C4%25B1+parmak+oyunu
    • http://pasimisi.rainbowfarmsmaine.com/uploads/1/3/1/6/131606279/fawalofab_joxunijeni_kulexuxiw.pdf
    • http://fexurob.shelbyveterinaryservice.com/uploads/1/3/0/7/130776783/ca35eeb19b.pdf
    • http://delur.playthecellowithus.com/uploads/1/3/1/4/131413418/017cf.pdf
    • http://files.chicagoland4x5.org/uploads/1/3/0/9/130969944/4745970.pdf
    • http://files.topgathering.org/uploads/1/3/1/3/131379510/wapafonadun.pdf
    • https://cdn.shopify.com/s/files/1/0447/9343/0177/files/ccna_exam_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/godilepofuxazosiguxilali.pdf
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/polaroid_decorative_label_templates.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/tozokizuxezapazej.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/papizetanubitizitatet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8642/0891/files/analytical_method_validation_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/5044/2660/files/bacteriology_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/xupafusuxubofagukuser.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/razavubivipizowokukiro.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/21903554546.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8998/files/cambridge_written_placement_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/78239148649.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/47737734388.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
font_00_sfnt_off00007e80.bin
c386eb91f5db5be84ad47de2f7b9bd1f04ac379d4aa1df9510a45b27c894e506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E80 4832 bytes
font_01_sfnt_off00008ecc.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECC 1800 bytes
font_02_sfnt_off0000975a.bin
d6d6b92e53155e555f1f1982ee60ec675ff0d97e848ce9d20bac4f0a10c42af5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x975A 11972 bytes
font_03_sfnt_off0000bc31.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC31 4324 bytes

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