Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c058a098db3d19…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 00:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c35e0e04a7e2621af57a6b94c53cfd8a SHA-1: 91bd9306cbda7305f0ca152e875dac7cfe5ff1d0 SHA-256: 79c058a098db3d19d3f96f5052274ce2ca7296323c1d644fea1d78e644e1225d
150 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, one of which is to a Shopify domain. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a deceptive document title and a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=exemple+cahier+des+charges+logiciel+informatique
    • http://bimunopo.dancebysanch.com/uploads/1/3/1/3/131383309/20b440de29a445e.pdf
    • http://migajik.jason-molloy.com/uploads/1/3/0/7/130775432/xedusubefasiwa.pdf
    • http://files.midnightsjourney.org/uploads/1/3/2/3/132302963/memazuwowe.pdf
    • http://files.claytonpondhoa.com/uploads/1/3/0/8/130873795/9357871.pdf
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/infrastructure_as_code_iac_cookbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/kimavosawululapokol.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/varexek.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/autocad_import_text_recognition.pdf
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/wisixisademozotovejika.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/mechanical_engineering_drawing_standards.pdf
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/famifejajebakorij.pdf
    • https://cdn.shopify.com/s/files/1/0457/3347/8566/files/34542343811.pdf
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/lagu_cinta_luar_biasa_karaoke_akustik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/87361666089.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/dikabisilewi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/cengage_coordinate_geometry_free.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/
    • https://cdn.shopify.com/s/files/1/0438

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064cc.bin
48859975517827c28f4b206a285f571cd7d0114730c5ea9f6b219cc1328bafda
pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 5720 bytes
font_01_sfnt_off00007817.bin
7f27727d19be3197140a6c2e7fee92964dc1ee41274a3c8c3477cbad75b307c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 11560 bytes