Malicious PDF — malware analysis report

Static analysis result for SHA-256 07198c3aaaeb8dde…

MALICIOUS

PDF

39.9 KB Created: 2020-08-01 20:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcadd5196c139aeea711540329441923 SHA-1: eb2ecc1e2a86d9030cbc5fdd36dd4ab89fe360c0 SHA-256: 07198c3aaaeb8dde54628218b93c552198607be6a6a56b66ca5a6891e5b739fc
154 Risk Score

Malware Insights

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

The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.com' domain. The document body, though partially corrupted, contains text related to 'Windows 8.1 product key' and the 'wkhtmltopdf' tool, suggesting a lure to trick users into clicking the malicious links. The presence of numerous external PDF links further indicates a link farm strategy to distribute malicious content.

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=windows+8.+1+product+key
    • http://files.newrichmond.org/uploads/1/3/0/7/130739015/megena-moziji.pdf
    • http://files.kintsugigoldenhealing.com/uploads/1/3/1/1/131163904/1227239.pdf
    • http://files.afalive.com/uploads/1/3/0/8/130814467/3ffd81248fbb6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/30299365317.pdf
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/kiwotaziw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/56848896104.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/pufadotadifukonoxum.pdf
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/56575534177.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/49171884964.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/4031239253.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1583/files/mamejafereroruja.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4993/files/zafokitinetuxozusenobuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/jodutapolane.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_off00005dd1.bin
0b141d2cc6ea4c9abeae7705d9243a597b11283988e5257417ad3b0ab557e1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD1 5372 bytes
font_01_sfnt_off00007061.bin
571a7bc5ee7d1c8db7d50dcb27471e584a05e5b21a693a72556e555ec86952ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7061 10060 bytes