Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd4f687f3745f22…

MALICIOUS

PDF

70.4 KB Created: 2020-08-24 00:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91c2155bbcfdbbde505d533f155d2f54 SHA-1: 94cf1ca94fb31d5165449f115274b9410fcfb0e8 SHA-256: 1bd4f687f3745f2250edabffc069b56b92ad758768f13f9bdc9c08dd972dd971
120 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a specific PDF topic. The primary malicious IOC is the redirector URL, which likely leads 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=dependency+theory+andre+gunder+frank+pdf
    • http://files.wardingtonintl.com/uploads/1/3/0/9/130969331/d81b66c19.pdf
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/91237763208.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5400/files/felobe.pdf
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/gofonakivog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/kuweluzazalasoxevas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31443612403.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/jupedatafosuvi.pdf
    • https://cdn.shopify.com/s/files/1/0464/5348/9832/files/cracking_the_code_third_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/9312/2460/files/76498330928.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/horror_breathing_sound_effect_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/23982714809.pdf
    • https://cdn.shopify.com/s/files/1/0433/0094/6073/files/50891927641.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_off0000d5e4.bin
2ed4a7dc8ed871cdb599a76269c1abbdf4a77478b34226ba44ef7d3bc8633287		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E4 5372 bytes
font_01_sfnt_off0000e82b.bin
70ed8df289d2abde8d6c2265704ee78a325ea59637232ded35189e9620fe3537		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE82B 10688 bytes

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