Malicious PDF — malware analysis report

Static analysis result for SHA-256 706405992ed77739…

MALICIOUS

PDF

33.9 KB Created: 2020-08-03 00:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a180b5c33f3508fdbdc190ecad8ecb3b SHA-1: 0a143ebceb1da3c4b482553b648895f04eba2704 SHA-256: 706405992ed7773982f08c7cef0967c61420bb09f57b0791df94764eeccda0a5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=vedalam+full+movi'. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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=vedalam+full+movi
    • http://files.alphaomegaindustriesinc.com/uploads/1/3/0/7/130775368/tizurejukukezoro.pdf
    • http://files.nikonicreagan.com/uploads/1/3/0/9/130969735/wubawogafotox.pdf
    • http://files.studiousscarlets.com/uploads/1/3/1/4/131438667/175880c8.pdf
    • http://files.venusevanswinters.com/uploads/1/3/1/6/131637291/masodovos-nalav-luremajajikute.pdf
    • http://files.scottgodwin.net/uploads/1/3/2/8/132815054/vudij_wufivawe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/80094789040.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/19809473695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/css_content_unicode.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9517/files/kazumubegepim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/sitoxuwivabaxiwek.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/talimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2636/6111/files/lijizodime.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/14705786923.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/61121295968.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/joduwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9377/0919/files/husqvarna_51_parts.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_off000048f3.bin
11e085bf89b43ba37bd4b11209d34aaccda0511f9b82334d4ad3db4a29685d68
pdf-font-stream PDF embedded font (sfnt) at offset 0x48F3 4804 bytes
font_01_sfnt_off00005948.bin
b9a8787e800e6ff32a6d27e309d2341da23eb5672383a24ac24136272032fe71
pdf-font-stream PDF embedded font (sfnt) at offset 0x5948 9800 bytes