Malicious PDF — malware analysis report

Static analysis result for SHA-256 806b695b8d247956…

MALICIOUS

PDF

54.9 KB Created: 2020-08-07 13:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d7e4327938c8d931a3364e5ae7ecac9 SHA-1: e56442e5c241a8d0444f5e9d20c5aed8aade05f9 SHA-256: 806b695b8d2479566da5958c204d7ba65c9445882877ff5c369606ad7bce7beb
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to a business income declaration and the URL 'https://ttraff.com/pify?keyword=declaration+de+chiffre+d+affaire+auto+entrepreneur+pdf+2020', suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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.com/pify?keyword=declaration+de+chiffre+d+affaire+auto+entrepreneur+pdf+2020
    • http://files.holyspiritlv.org/uploads/1/3/1/4/131482950/nodewaz.pdf
    • http://wonujemi.womensoutdoorweekends.co.uk/uploads/1/3/1/3/131379678/wusejudizuje.pdf
    • http://jegelumo.zenergymassage.net/uploads/1/3/1/8/131872055/9c435.pdf
    • http://files.myjungleservices.com/uploads/1/3/1/0/131070674/telikumujoxipimulali.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/84065322658.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/coronary_circulation_physiology.pdf
    • https://cdn.shopify.com/s/files/1/0432/8675/7536/files/40380395382.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/xazugufagibefido.pdf
    • https://cdn.shopify.com/s/files/1/0436/5628/2265/files/set_python_path_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/pcrf_telecom.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/35795314617.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/74825052066.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/clotrimazol_acetato_de_dexametasona_bula.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/xigigusulilokidemogi.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_off000093c0.bin
ca891cb5afcd8eec280b55bc27fa960997bb0927ede4a2db7756c8931a3d5a9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x93C0 5340 bytes
font_01_sfnt_off0000a5ec.bin
c0baad424bac6c3bc04b1ddae94d59b877af5132545f4316b0e416be94c565d5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EC 11996 bytes