Malicious PDF — malware analysis report

Static analysis result for SHA-256 5878ec2854f5c235…

MALICIOUS

PDF

38.6 KB Created: 2020-08-21 11:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 450a80d62ec3f119f74c8ad8c5ca1565 SHA-1: d8f884c7feb5c30762a97eebf961e09f79907328 SHA-256: 5878ec2854f5c235dee3a4aedaa083e9a15c61c07162cb4cbcca85e1d803981c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to academic guidelines and the malicious URL. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or redirection strategy to obscure the final malicious destination. The primary attack pattern involves luring the user via a deceptive document to a malicious redirector.

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=springer+conference+proceedings+guidelines
    • http://files.theseniorsage.com/uploads/1/3/0/7/130739463/wewuka.pdf
    • http://bimatek.palestinewildcatfootball.com/uploads/1/3/1/4/131454065/403140a123e.pdf
    • http://dalefegen.phyllisthompson.net/uploads/1/3/1/1/131164250/pewudefojuximixogafe.pdf
    • http://gadiguma.ldsdailyscripture.org/uploads/1/3/1/3/131398294/nevuter_wufit_nalukudoxazi.pdf
    • http://dunakojeg.artisan-creative.com/uploads/1/3/2/6/132695278/petapapawoxegenazen.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/96258600853.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8833/files/xusozuxavikiromisemedorew.pdf
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/gajigasinozizad.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/44019888396.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7605/files/25430716268.pdf
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/plural_of_lettuce.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/from_odt_to.pdf
    • https://cdn.shopify.com/s/files/1/0435/4670/6088/files/physical_science_grade_10_siyavula.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/5241819967.pdf
    • https://cdn.shopify.com/s/files/1/0439/1449/4107/files/bailiwick_crossword_answer.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_off000057c9.bin
2424bf94cb2320066ebf1f5d900d63c590f4602b5ab5a2abf7388d6e4abca990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 5216 bytes
font_01_sfnt_off0000699b.bin
c01e7b531a3035c01ef92c1fd8bf242123a170bbde1cbd2ed5450bd881ae52f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699B 10456 bytes

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