Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c5d09f5256782a…

MALICIOUS

PDF

41.7 KB Created: 2020-08-28 01:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a3e86fe29e94bed47a8268bf8f61c9e SHA-1: c50ac1fdab97dc1e003aa0753bc2485a6f0e0c1c SHA-256: e1c5d09f5256782aea98e3ec79cdf005c58a02221ad3065a580348e392120b22
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=root+samsung+galaxy+s4'. This URL is designed to lure users with a seemingly relevant topic, likely leading to a phishing or malware download site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=root+samsung+galaxy+s4
    • http://files.achievect.com/uploads/1/3/1/1/131163780/vorakubusi-bafudejopu.pdf
    • http://files.samrahhairandbeauty.com/uploads/1/3/0/7/130739678/6871210.pdf
    • http://desupigu.retroca.com/uploads/1/3/0/7/130739892/7854976.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/nujafezo.pdf
    • https://cdn.shopify.com/s/files/1/0463/2566/1851/files/st_augustine_on_free_choice_of_the_w.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/mamapapuwiniripo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/tediforakigodinifubabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/744840742.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/student_application_form_format.pdf
    • https://cdn.shopify.com/s/files/1/0463/5387/5105/files/airtel_kyc_registration_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/talani.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/dexezuduwerawomogefek.pdf
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/brain_games_for_seniors.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/78338001258.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/pitabalaj.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_off000063b9.bin
062377cb754174264847ca002f3d40c273fd88c75ac1de64ab8031eee33b9e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B9 5176 bytes
font_01_sfnt_off00007559.bin
d5ecd1a626dafc2a2a6c00dac46af06231df6669e4311edf0da9daeb7356c8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 10860 bytes

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