Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1fd971f0b571653…

MALICIOUS

PDF

70.3 KB Created: 2020-08-05 08:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51617d7b572eaaa476ca25e886e98ef8 SHA-1: e86371421685e7da69da29aa5b40a5cad9add737 SHA-256: a1fd971f0b571653378a545d01ebe56f51827a6c55e0eaaabf0c5f79798454de
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=arabic+worksheets+for+kg1+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The file is identified as a PDF, and the presence of embedded URLs and a redirector link indicates a phishing or redirection attack pattern.

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.com/pify?keyword=arabic+worksheets+for+kg1+pdf
    • http://files.acdapa.org/uploads/1/3/0/8/130814172/4432614.pdf
    • http://files.osmacappella.com/uploads/1/3/2/7/132740533/demapederos.pdf
    • http://files.mechssesaveetha.com/uploads/1/3/1/4/131437669/nipujuvojuwuv-xixatesin-papabagupewuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/63084184358.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/zotulik.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/55998873474.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/45493824976.pdf
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/ap_reorganisation_act_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/the_art_of_war_text.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/lawemabadetafejinir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/can_t_help_falling_in_love_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/ladusajikamebos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/86179183163.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/assemblage_deleuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/1642424492.pdf
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/62648520916.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_off0000d6b4.bin
f65cde12fc5370ff9dc45b0d13c39b353e76954e0a74b40040e9c7417bf1078c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B4 5720 bytes
font_01_sfnt_off0000ea3f.bin
ef4a7b3b7fa08fc6537f7062ce75c3c50137113aa81946ae49dbcd47f440dbfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 9936 bytes

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