Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f391a70b0dbf6e2…

MALICIOUS

PDF

34.6 KB Created: 2020-08-06 11:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7df0e93a4126cd7ddb7ef53112d1f999 SHA-1: eb22b7323d84c148ee10807c9d9955f6f13f8e7b SHA-256: 3f391a70b0dbf6e207c9193578932a39e19169f1c2e45ef0a233eaca4449d95d
120 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword suggesting a lure for educational materials. The document body, though heavily obfuscated, contains this URL and other links, indicating an attempt to redirect the user to malicious infrastructure.

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=comparative+superlative+exercises+pdf+junior+b
    • http://files.patricklyons.com/uploads/1/3/0/7/130776208/gapabojanafire_tisezaju_nemude_zobumesawofo.pdf
    • http://vigofera.identity-igif.org/uploads/1/3/1/1/131163635/ramuvir-gelatibu-dawupodop.pdf
    • http://files.lquertportfolio.com/uploads/1/3/1/3/131382239/5f8f7.pdf
    • http://files.studiosofneptune.com/uploads/1/3/0/7/130776142/9692329.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/13327085467.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/tararipozezejogazufokad.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/20332393160.pdf
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/sotugisaronukuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/tuzoloferesipikepuned.pdf
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/biblia_jerozolimska_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/xegavurajagorolurubilisa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0238/6856/files/subakowatusoluxukeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/27700690295.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/53048742269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.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_off00004a04.bin
93bf868a872c28834cbf021184ecc92b6e58f4f4d472b47aff1ebcb782b358d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A04 5552 bytes
font_01_sfnt_off00005cd0.bin
81cc65735df69b6bf4ee84f03236954de3e391ae828ea4b7e19cbacb57b5caba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD0 9548 bytes

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