Malicious PDF — malware analysis report

Static analysis result for SHA-256 19814876aa0561b3…

MALICIOUS

PDF

41.9 KB Created: 2020-09-09 18:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf65655096401349c067bc091ef6405c SHA-1: d814cf28fc9302a0ade5aa194a7f8bd7bdd6e560 SHA-256: 19814876aa0561b3ae33baccda0a015962a995febc612c7b669645fffb883612
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary redirector URL, 'https://ttraff.club/wix?keyword=sheet+vinyl+flooring+cost+per+square+metre', is flagged as malicious. This suggests the document is designed to lure users to malicious infrastructure under the guise of providing information, 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.club/wix?keyword=sheet+vinyl+flooring+cost+per+square+metre
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0448/9238/9531/files/kadidaxorufulobixorezuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/hip_pain_exercises_arthritis_uk.pdf
    • https://cdn.shopify.com/s/files/1/0433/8040/8474/files/limobiluvumuvedamob.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/zapederagakutisepazeki.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/64437175843.pdf
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/rebozuwedotasekosuwozi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/27002221818.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/shiv_bhajan_lyrics_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0438/4971/1776/files/15215195257.pdf
    • https://cdn.shopify.com/s/files/1/0437/9285/9293/files/weather_underground_st._louis.pdf
    • https://cdn.shopify.com/s/files/1/0462/7169/2951/files/xarokukutixaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/98846287320.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/sewuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/zibenonobefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/14375136760.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0008/files/vewukonogoxeli.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_off000062ce.bin
8b4a4ef939bd8b4573c5b91fc9dc5f518eef7c07cb9ed36ee0b80886d95987c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 5820 bytes
font_01_sfnt_off0000768d.bin
7628530db9807aea8ea46778064194d1e6a03fedbed4dd4be90efe71eed8a1d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768D 10764 bytes

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