Malicious PDF — malware analysis report

Static analysis result for SHA-256 801725168c269035…

MALICIOUS

PDF

39.7 KB Created: 2020-08-16 11:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04ef26f8af45c609bc29665cba610e87 SHA-1: 0cfd7b9537c5e016cb7606078f60adc6b7803216 SHA-256: 801725168c2690359ef4e5a4c66d8f22c44f25c1303a9f69cbdb68e7daf8864a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is presented to the user as a download for 'Apache Kafka pdf free', indicating a phishing or social engineering lure. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious redirector.

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.cc/pify?keyword=apache+kafka+pdf+free
    • http://files.turkeycreekretrievers.com/uploads/1/3/0/7/130775387/metopoxafekova-jukilekoseliput-vujemaga.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/mathematics_grade_12_textbooks.pdf
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/gizudodebalofomimirofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/75924300563.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nipexaledova.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/60804182788.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/disturbed_indestructible_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0444/1587/7287/files/40991051608.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5312/files/27791858863.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/adjetivos_posesivos_y_pronombres_posesivos_en_ingles_ejercicios.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_off00005de1.bin
68ad2de82ff5b9b1073d434fe10a8458e398408e0f30f4e6dfa924900721650a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE1 5088 bytes
font_01_sfnt_off00006f23.bin
1bde7e00090d441d9994b238334fa367d1e9c534b3db34a3a283f2d256b1ebc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F23 10472 bytes

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