Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e8112fdc666bc0a…

MALICIOUS

PDF

54.9 KB Created: 2020-08-10 21:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc8e8caf4d043935fe7497ef15e5f946 SHA-1: 6e0142ecdad15ab1129a5fd1ee18b9e76ac4bfb9 SHA-256: 0e8112fdc666bc0a090e9b15002e9031b1021ff9c07c765f43f49ab4319df837
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, many of which point to a link farm designed to manipulate search engine results. One prominent link, disguised as a lease agreement, redirects to malicious infrastructure at ttraff.ru. This suggests a phishing or redirection attack aimed at users seeking legal documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=new+york+apartment+lease+agreement+pdf
    • http://files.lennoxheadlandcare.org/uploads/1/3/1/4/131406181/gefanikiwamiga-logodijufa-wakag.pdf
    • http://dawag.feistyandalivemommy.com/uploads/1/3/1/3/131381204/juxiguw_pazared.pdf
    • http://files.tinkersgardenminiatures.com/uploads/1/3/1/4/131437044/5572b95.pdf
    • http://sisolaso.niclasfransson.com/uploads/1/3/0/7/130739835/sarazavole-rotutot-tureguv-juditonited.pdf
    • http://files.rootedresiliencecounseling.com/uploads/1/3/1/3/131379678/1d18ccaa6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/mifimewumurixo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/36864450727.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/39296922573.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/hot_ham_water.pdf
    • https://cdn.shopify.com/s/files/1/0434/1150/5302/files/acute_glomerulonephritis_pediatric.pdf
    • https://cdn.shopify.com/s/files/1/0451/2707/3945/files/alif_laila_story_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8173/files/zanepezoreku.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/3292148176.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/leposagabiwoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/19735257116.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098c3.bin
5ecc4e70cc17870ac117ca05f229d1e81269fae35349978ad9cc6a6d66f56e89
pdf-font-stream PDF embedded font (sfnt) at offset 0x98C3 5588 bytes
font_01_sfnt_off0000abd3.bin
6f458638147bfb92663bcd2c74ac73c5c73a411e9ade9ea472725f4225dc51ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xABD3 10292 bytes