Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba65cfa50e825c7…

MALICIOUS

PDF

49.8 KB Created: 2020-08-26 16:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bda857138e1349b08da69336c86189b SHA-1: 24644cbbbdfc193ec3cebe4c7ed536bd6e475aa6 SHA-256: aba65cfa50e825c7013a25d22753d133ba010d486b84be00c4d7dc8ae069753b
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which likely serves to obfuscate the ultimate malicious destination. The document body contains garbled text and embedded URLs, suggesting it is not intended for human consumption but rather as a vehicle for distributing malicious 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.com/pify?keyword=mi+filosofia+del+triunfo
    • http://fuzuta.alysonkinkade.com/uploads/1/3/1/4/131409090/miwusidofi_latewodasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3756/files/gewaluzidareminefot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/94101915800.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2305/files/python_generate_barcode.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/37078457716.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/capacitive_sensor.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/neurokinetic_therapy_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/85031800192.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6513/files/64553081854.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/82406646686.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/23191568868.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/bekositin.pdf
    • https://cdn.shopify.com/s/files/1/0436/9134/4026/files/charlas_de_seguridad_de_5_minutos_en_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/bjp5_self-_check_10._15_arraylistmystery1_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008527.bin
ee5d800ac4cc1beb3a9fb10160ad672e3bb4998e4cca71434ad5c2a19ac5d0dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8527 4908 bytes
font_01_sfnt_off000095e2.bin
75d805e4d2f16c4928eec2cdfc7aa6703c14f339076b196ed390a4ac3097306a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95E2 10936 bytes

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