Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae38de2c715cd2a…

MALICIOUS

PDF

50.9 KB Created: 2020-08-23 21:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 279fcdfdd59a7654fbc132e064a769b7 SHA-1: fa2d60c7dac5f4c14eaf5a6e528baedb32c13494 SHA-256: fae38de2c715cd2ac47a5f29efa11f16b73803c6e41da4bb031f30c24711526d
154 Risk Score

Malware Insights

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

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 URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to the 'ttraff.com' URL, which likely serves as a gateway to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=data+aws+s3+bucket+terraform
    • http://files.fandrlive.com/uploads/1/3/1/6/131636697/170626.pdf
    • http://pazoba.plantedparenting.com.au/uploads/1/3/1/3/131398425/verovo.pdf
    • http://files.glendaleattendantcare.com/uploads/1/3/1/3/131379591/tegawon_jazimaveli.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/66605590658.pdf
    • https://cdn.shopify.com/s/files/1/0451/7340/7893/files/amiga_lha_roms.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/rudozumefasobewamajirenuw.pdf
    • https://cdn.shopify.com/s/files/1/0462/2863/5797/files/dream_on_me_portable_crib_mattress_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/basugogigarerebid.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9927/files/xakimu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/ligumujotokijepoxekugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/food_web_worksheet_printable.pdf
    • https://cdn.shopify.com/s/files/1/0459/9057/6285/files/brice_de_nice_3_vf.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_off0000641e.bin
e393364a89682f07f7a63a2901685b44f30555c23417d5ccf71b66ce6fa53465
pdf-font-stream PDF embedded font (sfnt) at offset 0x641E 5180 bytes
font_01_sfnt_off000075d3.bin
85e47f4c5135f8bdcc3bc70e6629a204db68bebe2748f415ead9d0f06003585b
pdf-font-stream PDF embedded font (sfnt) at offset 0x75D3 11048 bytes
font_02_sfnt_off00009b38.bin
137c23124c16a469442ece0d6043bc3a0c1400548aacb9ce8e13445093cd952e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B38 16232 bytes
font_03_sfnt_off0000b090.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xB090 4324 bytes