Malicious PDF — malware analysis report

Static analysis result for SHA-256 42283c41c88cd860…

MALICIOUS

PDF

42.8 KB Created: 2020-08-29 08:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d157b246a1d1f2b4a1262991c827ae9 SHA-1: 674b58e552957f53b39236de11aa4fe67cc0cc16 SHA-256: 42283c41c88cd8606c81c920b98d74c733c023b34482b21e64e5682ee00c8f8b
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text fragments related to 'Q acoustics 3020i review' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a link farm heuristic further indicates an attempt to distribute malicious links.

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/wix?keyword=q+acoustics+3020i+review
    • https://cdn.shopify.com/s/files/1/0431/8124/4573/files/92248900228.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/ukulele_folk_songs.pdf
    • https://cdn.shopify.com/s/files/1/0437/2352/2216/files/new_year_resolution_bulletin_board_i.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8816/files/wufaxebememofutebifabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/wawifavafe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/bitodazixurojijibafilu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4183/9514/files/bitches_love_sosa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/harrison_bergeron_movie_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8773/files/pert_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/ropodegazetatefokuviset.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_off00006929.bin
790bde3b505304464a810e420d189e529fa7bdc7c1b7c4d210ed5159ea2315db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6929 5412 bytes
font_01_sfnt_off00007ba6.bin
674980dc529cf3ff66b0dfe42247f855439e8e9328795f11a15e59e4498e5279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 10300 bytes

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