Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb88577d2b23c968…

MALICIOUS

PDF

58.1 KB Created: 2020-07-31 03:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6467ebaaf9d667e76c943df52cb78fbf SHA-1: 758c9f17ffbbfcc3470db9f88fdcee438827621f SHA-256: bb88577d2b23c968b26e73e7fc79c8515404e42ce946e2c4315aa63119f1bb59
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, forming a link farm, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'business strategy examples pdf'. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=business+strategy+examples+pdf
    • http://files.dailydosirak.com/uploads/1/3/0/9/130969356/borute-pufawowi-vedasofuzisojaj-mekodi.pdf
    • http://files.juliacernydmd.com/uploads/1/3/2/6/132695491/luxex.pdf
    • http://files.thedesigncollectivegroup.com/uploads/1/3/1/8/131859370/68e3d9e.pdf
    • http://files.owenyelland.com/uploads/1/3/1/1/131164462/zupijiwesu-nokawedetinusal.pdf
    • http://files.teachforkosova.org/uploads/1/3/0/8/130873728/6572466.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/36211751533.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/21680132788.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0431/8045/8144/files/riwowememitu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/zasaxemaxebul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0434/4968/0028/files/57123872692.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/gumalalovefupuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/kowofinemigatijifegewamu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/97069825297.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/wuxuranujusixewotawujof.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapa

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a63a.bin
39ad8f35b423d33f7fff92c0a65eb99d77c6a7711963156908079056f9f6411b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA63A 5352 bytes
font_01_sfnt_off0000b85c.bin
a14f17114b653a36113fe952cf1fd9a3c00178aeeaffe51bab0843848cff5bc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB85C 10280 bytes

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