Malicious PDF — malware analysis report

Static analysis result for SHA-256 439d67cc3ee91535…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 22:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ae586bbc8a9ea08bc11b7493589739a SHA-1: fd7248e2f2c63b2819688ae63d9395413cfbd508 SHA-256: 439d67cc3ee91535b1e0bcf9998f6a656eba0832124084cf3c0672e5dd59b5b1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to domains associated with redirectors or link farms, indicating a malicious intent to direct users to harmful content. The primary malicious URL identified is https://ttraff.com/pify?keyword=game++karne+wala+software, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to 'game karne wala software' and includes the malicious URL, reinforcing the lure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=game++karne+wala+software
    • http://files.lisamccafferty.com/uploads/1/3/1/3/131383664/bamibitamurata.pdf
    • http://joropem.starlingauctionsltd.com/uploads/1/3/1/6/131607712/0456a87cc825a.pdf
    • http://mudobeje.laurentrimble.com/uploads/1/3/1/3/131383664/7498485.pdf
    • http://files.henryrice.co.uk/uploads/1/3/0/7/130776521/veniroxeritalil_dewogix_guvuked_bipad.pdf
    • http://files.yogaatschools.com/uploads/1/3/1/3/131384663/3b9a06.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/mabudibibis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7952/3751/files/lokabosibujotubumexijines.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/30861302630.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/pomop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/bibliophile_an_illustrated_miscellany.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/83513551480.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9101/files/galunenuwakazema.pdf
    • https://cdn.shopify.com/s/files/1/0435/6174/6595/files/gufukumukamumerovekaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/go_ask_alice_movie.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080b8.bin
9d40fab63278aca7959e1d8125d7ef115c2672103982c5fa207d6e5cec7e6199
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 5100 bytes
font_01_sfnt_off00009217.bin
f34701a2976b4152bbb69699a60563adab82648abbcea2acdeeea22f5a6d8e35
pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 13124 bytes