Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff6df92f1ad6ddb…

MALICIOUS

PDF

40.7 KB Created: 2020-07-31 01:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67531f2943aa541bfa1f52a669500eca SHA-1: e95b5a43eff8674e0028bc870a88315d9de14c1d SHA-256: 0ff6df92f1ad6ddbb84ed87e6c52254d48793263c5d3950280c46ed1ca34e0c7
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector. The document body, though heavily obfuscated, suggests a lure related to 'Anti money laundering act kenya pdf'. The presence of numerous external PDF links further indicates a link farm strategy, likely to obscure the ultimate malicious destination.

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=anti+money+laundering+act+kenya+pdf
    • http://files.beautyatthecroft.com/uploads/1/3/0/8/130814288/6501321.pdf
    • http://files.pathlightwisdom.com/uploads/1/3/1/8/131871633/c17c68d1aee5ed.pdf
    • http://files.lauracarson.net/uploads/1/3/0/7/130775393/5772275.pdf
    • http://files.microworldreflections.com/uploads/1/3/1/1/131164211/ramin_filujise.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/29881402293.pdf
    • https://cdn.shopify.com/s/files/1/0432/2780/7908/files/juwogejadodijazazisoful.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/63274664464.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32867625585.pdf
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/12137543176.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/28235154529.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7124/files/33496858685.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/zonafefuvov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/dasusugano.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/gidezodumopilokirawuxuwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/60097777375.pdf
    • https://cdn.shopify.com/s/files/1/0439/4903/1592/files/firufebefizexemibutar.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/danakejekadabanetokafip.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_off00006154.bin
58f2fd59c3857493c5a4c3e1a66c637cdfbb3dd59ad32e2427c45b0941d85e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6154 5336 bytes
font_01_sfnt_off00007361.bin
0f0113ba992d99ecd5bb903331099bb943874d928be1352bb615323a23400658		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 9944 bytes

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