Malicious PDF — malware analysis report

Static analysis result for SHA-256 735386e3ab6cd888…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 13:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ab1d4faaeaafaaa71b0c31c72d265e SHA-1: b0198f5aa1a8d72ef652938957fd4d84aa625f5f SHA-256: 735386e3ab6cd88855cf98f2ff2585e3caec3cb4f1395873dec7619b62b1b80f
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominent URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'phantom doctrine cheat engine' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the presence of numerous external links further supports a malicious intent, likely for SEO spam or redirecting users to 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.ru/wix?keyword=phantom+doctrine+cheat+engine
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_cdc77f2aa0844d95be48d2cfbe874bbd.pdf
    • https://static.usrfiles.com/ugd/e3ff21_ce6227c1276b4c1baa81694b50768aff.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fdb069ff4f04dcbb37ab1446f3308e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_01e1234bd0d24316aa0dcd253e7169a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c31558bff1c4664b5282cef82c857d9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/51947668789.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/73342089746.pdf
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/anaerobic_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0431/8733/9413/files/lamokofafase.pdf
    • https://cdn.shopify.com/s/files/1/0437/7516/4574/files/22616000642.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0512/files/kejedoresome.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/opera_mini_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/jufeboxumepepisanuvapuwes.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_off0000663e.bin
e5ab44f341b6705aef6461036476d3e0450a5a3cbaf77ceff236509714341f4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 5144 bytes
font_01_sfnt_off00007783.bin
b209673dcf7097b89ed3edaec65f9a5179f4bd9e34e582e7924236d998088efb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7783 10372 bytes