Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5097e10c769a526…

MALICIOUS

PDF

43.8 KB Created: 2020-08-14 12:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c7e37e510193cba828276312755c84c SHA-1: e4475184d653acc99fbe221ecc94df35db22f9d2 SHA-256: f5097e10c769a526a610f95b22c7236eca39ec9202a2886c404953c6351b0d32
150 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 'https://ttraff.ru/pify?keyword=autodesk+sketchbook+pro+mod+boss+apk'. This indicates the document is designed to redirect users to external content, likely for malicious purposes such as software piracy or malware distribution. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of a large number of embedded links to PDF files on Shopify, while some are benign, suggests a link farm tactic to improve search engine ranking for malicious content.

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=autodesk+sketchbook+pro+mod+boss+apk
    • http://zavifitab.classicroadart.com/uploads/1/3/1/4/131453215/8745149.pdf
    • http://komebosov.wellnesslifestylelounge.com/uploads/1/3/2/3/132303195/xiduvaf.pdf
    • http://files.misstharrisclass.com/uploads/1/3/0/7/130776409/0a27e443dae.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/a_buddhist_bible.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/difference_between_centripetal_and_centrifugal_force.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/62015575511.pdf
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/the_cask_of_amontillado.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/37452512934.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/105818883.pdf
    • https://cdn.shopify.com/s/files/1/0440/5349/5958/files/aerodynamics_of_the_airplane_schlichting.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/xumev.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/7992/files/essentials_of_understanding_psychology_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/1-_99_cooking_guide_osrs.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a88.bin
1f01740ef09f61d1767c80016fed81a9ce82c6aea36ffb2268080d48007be8b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A88 5476 bytes
font_01_sfnt_off00007cf5.bin
4b5c0db950eefbaffeb267a5560fd9a7670c93672e5d1abaaae7692819a13cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF5 10912 bytes

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