Malicious PDF — malware analysis report

Static analysis result for SHA-256 808b85af6aafc2bf…

MALICIOUS

PDF

43.0 KB Created: 2020-08-26 11:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 003d8cd18456526dd927ed76a3e2aec0 SHA-1: 832b9f6687ec1db2c463dceb3fa1a7855470f8c9 SHA-256: 808b85af6aafc2bfbac23b12504b715124b01f86c448a7cca9df67cea613e00d
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many hosted on 'cdn.shopify.com' and other domains. The document body, though partially corrupted, contains the suspicious URL and appears to be a lure related to 'rotten tomatoes'. The primary attack pattern involves redirecting the user to malicious infrastructure via embedded links.

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=who+owns+rotten+tomatoes
    • http://gugevobu.thejacquelineford.com/uploads/1/3/1/4/131407370/sezuwu-xufanasedux-junex-jedetolazo.pdf
    • http://dirurorob.artartmargaretcameron.com/uploads/1/3/0/8/130874565/waxaro.pdf
    • http://vikamuban.stuffrobpaints.com/uploads/1/3/2/8/132814930/5131388.pdf
    • http://files.knightgallerie.com/uploads/1/3/1/0/131070762/4466875.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/jidanesivedifopob.pdf
    • https://cdn.shopify.com/s/files/1/0464/0545/1931/files/patterns_of_world_history_volume_2_p.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sozolomunegodufedawugiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/november_2020_calendar_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/qiuck_sand_pyro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8428/files/gimajunezobiwamel.pdf
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/97542788768.pdf
    • https://cdn.shopify.com/s/files/1/0440/6955/2293/files/nvm_update_node.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/this_is_my_biome_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/jixagasaliwawaxed.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/56218795998.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_off00006aca.bin
e88ce005e225e4a424a16ede45cce30c275c84778852e468533a892ed3a03823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACA 5000 bytes
font_01_sfnt_off00007bab.bin
3204c6a4e4a23edc1bab8d9a0c36f3613e4dce677078459fa8fe22693b100f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 10484 bytes

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