Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f843f8d4201a552…

MALICIOUS

PDF

55.9 KB Created: 2020-08-24 08:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04d2a1947606904886dfe9659d992f92 SHA-1: a646dcd42c555d677f427e6fcab12aca12ed5a9a SHA-256: 1f843f8d4201a552076d4317adbdb3780a989adb64437b50c56ab3ebe93a245e
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. One of the primary embedded URLs, https://ttraff.ru/pify?keyword=el+alienista+pdf, is identified as a malicious redirector. The document body contains garbled text but includes references to the malicious URL and other external PDF links, reinforcing the attack pattern.

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.ru/pify?keyword=el+alienista+pdf
    • http://files.chantrydancecompany.org/uploads/1/3/0/9/130969182/regiredopib-dedixizekasa-kativafe.pdf
    • http://jakaxoro.fullwavemusic.com/uploads/1/3/1/4/131437502/2802688.pdf
    • http://files.vasilinaorlova.com/uploads/1/3/1/8/131856917/vosenixate.pdf
    • http://pikezidil.erwinartistry.com/uploads/1/3/2/7/132740249/nowimetagonaniz.pdf
    • http://fezis.isrtp.net/uploads/1/3/2/6/132683286/6304bbdbde7.pdf
    • https://cdn.shopify.com/s/files/1/0446/8106/8697/files/comparing_and_contrasting_texts_lesson_19_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/magic_training_runescape.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/50900341314.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/76734114176.pdf
    • https://cdn.shopify.com/s/files/1/0457/8620/2278/files/ckd_treatment_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/romubuxunexapigujitubive.pdf
    • https://cdn.shopify.com/s/files/1/0433/9338/4599/files/89440515506.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/96126271454.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_off00008f5a.bin
c41f8e4becc2d6a80c03680528cc175f28ffd8c6ce91b750e87dc062a7fe7369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5A 4896 bytes
font_01_sfnt_off0000a01c.bin
eca4954ab44366fd5956074d3264d5912471785578e345c4ca42b73ef82cb302		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA01C 16528 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.