Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd31d3ea7b473531…

MALICIOUS

PDF

42.0 KB Created: 2020-08-28 02:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 573613a5a329b43ada0a5447a27a2560 SHA-1: 65a4a898cfec5931a1fe90b54a358a6842cd5643 SHA-256: dd31d3ea7b4735313e9b4edbdf2a8d95f4b08534c6e45b634458943c0234e9ad
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'the intelligent investor audio book' and the URL for the malicious redirector, suggesting a lure to a phishing or malware distribution site.

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/pify?keyword=the+intelligent+investor+audio+book
    • http://wemovu.audreyartography.com/uploads/1/3/2/7/132710712/jitagipudowevesanoj.pdf
    • http://files.devlindesignstudio.com/uploads/1/3/2/7/132740540/5481416.pdf
    • http://bilifamo.holylovereiki.com/uploads/1/3/0/9/130969077/0cfbb.pdf
    • http://files.allisonaitken.net/uploads/1/3/1/4/131452922/zavubufoxanumajuzoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/android_10_q_alacak_telefonlar_xiaomi.pdf
    • https://cdn.shopify.com/s/files/1/0447/3444/7770/files/mutejebar.pdf
    • https://cdn.shopify.com/s/files/1/0437/1644/4315/files/kutogegosixesanameralane.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/angiosperm_flower.pdf
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/pozovejajinonoso.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1846/files/ranzcog_guidelines_for_exercise_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/calendario_con_fasi_lunari_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/22683275848.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8491/files/18136069819.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/retencion_placentaria_bovinos.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/bharat_mala_project_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/35690386287.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_off0000654f.bin
72681f6e6b539197ab2d8899dfd37c99139c1ccc399eb08ea9c95f67a4ba5b1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 5300 bytes
font_01_sfnt_off0000774e.bin
6eb53718efd6cfe7ad5f83cd09ec6ffffdc8a6beef35bb54c06c9ea70a99a84f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774E 10532 bytes

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