Malicious PDF — malware analysis report

Static analysis result for SHA-256 1478353412fe6fcb…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 13:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e3a41864beae18abd997213a08ea745 SHA-1: 74fbff9ef8308a43f43a0bc1a793af03ba4199a7 SHA-256: 1478353412fe6fcbc9645d4b507f1ad52a1370aee9d7e53b03458c0e0c528e60
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=charlie+malayalam+movie++kuttymovies'. The presence of numerous links suggests an attempt to direct users to potentially harmful websites, possibly 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.cc/pify?keyword=charlie+malayalam+movie++kuttymovies
    • http://files.13ththeatreco.co.uk/uploads/1/3/0/9/130969053/3358463.pdf
    • http://files.sakinaliterarysociety.com/uploads/1/3/1/4/131452904/nowiraba.pdf
    • http://misupag.tikamoini.com/uploads/1/3/0/7/130739777/sotagurif_rafofigos.pdf
    • http://files.promisegarden.com/uploads/1/3/0/7/130775402/683d788f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/46597137265.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/gadepixazixagavimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/tuzasidokutumixazi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/gorazunigixologofu.pdf
    • https://cdn.shopify.com/s/files/1/0456/4264/5671/files/16893258463.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/23537655315.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/81201817353.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_off0000628b.bin
1eca47aac5161660192eac77a4f86d833f19e969fd006229cc7b1894717422a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5056 bytes
font_01_sfnt_off0000739e.bin
66a6bae00ca8d3475ea25701abfa39121528b58287c0b0e545864cec9ab82774
pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 10404 bytes