Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda35d7ebb1b5914…

MALICIOUS

PDF

40.0 KB Created: 2020-08-12 11:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93cac51030d864e5d78e14d38fa1f1ca SHA-1: 54587a0dd2d124760afef0d968ef3165afa49bba SHA-256: cda35d7ebb1b5914efdc5269f4013c5b8a2b9a1857a56b533ab19b6ddd1e4fc1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to a user manual and a URL that matches the malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or to download further malware. No scripts were extracted from this sample.

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.com/wb?keyword=hunter%20douglas%20powerview%20user%20manual
    • http://files.120ebaltimore.com/uploads/1/3/1/8/131871980/5728684.pdf
    • http://ziwelojap.noblehomeinspections.com/uploads/1/3/1/6/131606111/mawufupijaf-bojovawix.pdf
    • http://fadikati.simonewelsh.com/uploads/1/3/0/7/130740069/gimulixop.pdf
    • http://selofad.sunsetparkavenues.org/uploads/1/3/0/7/130775997/tadutobipo-tuwibo-vipasagawub-woxolel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/auditorium_space_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/reset_to_origin_master.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/97052569396.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/avclub_game_of_thrones.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/13247134432.pdf
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/badminton_new_rules_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/bunokalejavozamixok.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/losabaxelibozij.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/59837933289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33971068516.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/social_psychology_aronson_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5521/files/59208043125.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_off00005e2a.bin
1fa90e184156607831c44de67b7c6b7a862123cf38860a5300ba61e01d8dc225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2A 5392 bytes
font_01_sfnt_off00007080.bin
b9f5e3f5b5b8f1853bf3d4929b23d8f29e0ccfd210d2a0270a77d6085801e828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7080 10128 bytes

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