Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be97461349ba467…

MALICIOUS

PDF

41.8 KB Created: 2020-08-28 01:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a0b3f8634de598105addffa8031ebe1 SHA-1: e5b19c013be9d995563444804f7f53f19b1154cf SHA-256: 3be97461349ba467e425d3d588d727179a370b2512d107f5ffa9ac57385d7628
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to a 'digital photography complete course' and the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to drive traffic 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=digital+photography+complete+course
    • http://baxogafe.riscooper.com/uploads/1/3/0/9/130969060/3215580.pdf
    • http://files.imgonnaneedmorefries.com/uploads/1/3/1/6/131606878/7414212.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/bible_holy_book_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1628/1512/files/coleman_powermate_aircompressor.pdf
    • https://cdn.shopify.com/s/files/1/0449/4236/0744/files/hbr_after_action_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/furetanilisoxojenufami.pdf
    • https://cdn.shopify.com/s/files/1/0434/1606/0061/files/50451990193.pdf
    • https://cdn.shopify.com/s/files/1/0435/4739/4199/files/bosch_automotive_electrics_and_automotive_electronics_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/disadvantages_of_manual_accounting_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/89923285717.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/fetodatabopegevedenetut.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/vubijoxiwosaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/43032400030.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_off00006455.bin
ffb9bc746eb24fe816776e8523402d4138b44dd56bc8d78a7c2d53c19a568d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 5448 bytes
font_01_sfnt_off000076c5.bin
f09fdb73e0e27e5de2e5927b99e3e57f04386efb3222954465cb061f8fc2e206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 10316 bytes

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