Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a15a79bf8755e0…

MALICIOUS

PDF

107.5 KB Created: 2020-08-06 15:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56b586ff5c793065f1cc8ad5517dfd7c SHA-1: c5a30ee873b210ced7c32ab3b661d694b3678d51 SHA-256: 90a15a79bf8755e027b49f0f03756765201a8d0fed2c280c822ffd40f6295cb7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=post+bretton+woods+system+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to external content.

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=post+bretton+woods+system+pdf
    • http://files.access-genie.com/uploads/1/3/2/7/132740352/198dd1c4f.pdf
    • http://files.trevorhook.co/uploads/1/3/0/9/130969974/6818267.pdf
    • http://files.alyssastanghellini.com/uploads/1/3/2/7/132710627/ca3de847b.pdf
    • http://files.watchmeloseweightandgetfit.com/uploads/1/3/0/7/130775123/176aeb760c09.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/90111883463.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/24945976956.pdf
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/1677609951.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/28310148001.pdf
    • https://cdn.shopify.com/s/files/1/0430/3618/0634/files/93721502812.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/anti_inflammatory_drugs_and_their_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/wivupijopalixekebige.pdf
    • https://cdn.shopify.com/s/files/1/0437/7319/8487/files/english_placement_test_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/divudiwiruba.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2904/files/jerry_kuhnhausen.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/blastocystis_hominis_tratamiento_nios.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015aca.bin
cd719bb6324ab91e420bf2f1625ff1000eab888680f64282e6bceb247ebd069b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15ACA 5020 bytes
font_01_sfnt_off00016bcc.bin
5d7689a3a99e54916cdbf265ee009935c0b315838dee018aef6543dbfe939cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16BCC 11632 bytes
font_02_sfnt_off000192e0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x192E0 4324 bytes

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