Malicious PDF — malware analysis report

Static analysis result for SHA-256 62744a9db5152258…

MALICIOUS

PDF

58.9 KB Created: 2020-08-14 10:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 170d44cba91dd5415ce976c1e3c3dc43 SHA-1: 861f5a3496f4cd27b265cec8ba4e68e43335c437 SHA-256: 62744a9db51522583508016f7ce8b40936bdb300b0542217171fd76c50589dac
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL and a list of other PDF links, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or redirection scheme.

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=hiragana+cheat+sheet+pdf
    • http://files.thejojodrops.com/uploads/1/3/1/3/131379380/9502968.pdf
    • http://files.jameshesla.com/uploads/1/3/1/6/131637658/ketafene.pdf
    • http://tijopaxa.sailingforthesoul.com/uploads/1/3/1/1/131164250/56872468.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/29546538933.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/31681625432.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/merolexokujego.pdf
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/nfhs_basketball_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/76043814962.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/70124451924.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/pi_hole_setup_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/70026947811.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/ccie_security_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/8910/6846/files/86371694973.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/nadenep.pdf
    • https://cdn.shopify.com/s/files/1/0440/5903/3752/files/rolovabepugowidanuwenupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/98893215816.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008704.bin
a1fbf42181f606dae5b40829edbd57e079bbf25c7a2104965cba9f3fa09c4ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8704 5828 bytes
font_01_sfnt_off00009b29.bin
cfe8f8cfde3f650375edbcbe1bee59c335330603ad4cc02987cb72b1beba7147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B29 5344 bytes
font_02_sfnt_off0000ad3d.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD3D 1800 bytes
font_03_sfnt_off0000b5ca.bin
5a50a0dacf27b25897b436aa6c6905d067b83801e809b4d427c6a09d2dfe96a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5CA 12500 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.