Malicious PDF — malware analysis report

Static analysis result for SHA-256 33534e69efd7f5db…

MALICIOUS

PDF

40.7 KB Created: 2020-08-14 22:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63a214255cae6d1a8e4626c3653ecac9 SHA-1: 3be791f107d7bb2594b5e2627d24e1bbc422819b SHA-256: 33534e69efd7f5dbf36fcf96762ccc56fae9d809ca2eb553871c0f3ad0f9343d
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.com' disguised as a document about 'andragogy learning theory'. It also exhibits a link farm behavior, embedding numerous external PDF links, many hosted on Shopify. The primary malicious link is likely intended to lead the user to a phishing or malware distribution site. No scripts were extracted, limiting the analysis of direct execution behavior.

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=andragogy+learning+theory+pdf
    • http://files.akws.org/uploads/1/3/1/3/131383821/8162178.pdf
    • http://files.tylermusicacademy.com/uploads/1/3/1/4/131453022/f1869ad9da25.pdf
    • https://cdn.shopify.com/s/files/1/0437/9190/9025/files/code_complete_steve_mcconnell.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/destination_a1_a2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/65684538561.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/lebitanojuxebibedagovok.pdf
    • https://cdn.shopify.com/s/files/1/0436/4386/3198/files/trx_golf_workout.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/exam_master_current_affairs_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/copd_assessment_test_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0441/0903/7720/files/xilejusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/97595738567.pdf
    • https://cdn.shopify.com/s/files/1/0435/7285/4939/files/funny_university_names.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/xawakojitoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/9710/2238/files/centrifugal_pump_theory.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_off0000624e.bin
9c889dacafa1a15943f971de49401dfb0b7e4d9c8596251c852b083de2dcc05b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 5216 bytes
font_01_sfnt_off00007407.bin
4937e7bac6a9ec6639fe126b1d7238b98c1a541cd38c5f4b00bf16529d8bbd9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7407 9908 bytes

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