Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bc864eec1db40f…

MALICIOUS

PDF

48.5 KB Created: 2020-08-20 08:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f5a420e4bb8b3db2d33afa3c8645c18 SHA-1: 2bd7a561d119f2c6ae67c1e19d8d81ce4f133fbb SHA-256: b6bc864eec1db40f6aabc03abe7a88bc358eb308110db22af8ec00d2659013ba
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic indicating it links to a known malicious redirector, specifically disguised with the text 'Autism behavior checklist italiano pdf'. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=autism+behavior+checklist+italiano+pdf'. This suggests a phishing or social engineering attack aiming to redirect the user to 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=autism+behavior+checklist+italiano+pdf
    • http://files.edinburghtabletennis.com/uploads/1/3/1/0/131070160/napuvunagasunok.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/ruzumidamuduzodaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7688/6431/files/60789958265.pdf
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/43232133039.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/loxuzizonit.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/43797202167.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/official_sat_study_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/77330216596.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/apache_zookeeper_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/hukum_utilitarianisme.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/50264402077.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/titopalagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/26099661029.pdf
    • https://cdn.shopify.com/s/files/1/0440/5608/4630/files/vaved.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_off00007e70.bin
bee2747497b0df505b2c13b61809c40f11b10074cb40732ae7700e701ea66f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E70 5648 bytes
font_01_sfnt_off00009176.bin
fcb0bb9702da73d669e467f8342fb6e37381e801b6e17614272eb77d5f0bc997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9176 10356 bytes

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