Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad279fc2ae0cd4e6…

MALICIOUS

PDF

42.6 KB Created: 2020-08-17 04:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a09cdae4aab3bf52e8c7bb09fed67334 SHA-1: 0595628181d33751e88ef3df1a1251fa9f91ec3c SHA-256: ad279fc2ae0cd4e617eb013d0f5190dccdcbaddd221d7154a52ce2c9379a5718
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=muscle+origin+insertion+action+pdf'. This suggests the document's primary purpose is to redirect users to potentially harmful websites. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy to improve SEO and distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=muscle+origin+insertion+action+pdf
    • http://files.southwoldholiday.com/uploads/1/3/1/4/131437276/1e4a59be5.pdf
    • http://files.tacosuavewarminster.com/uploads/1/3/1/6/131636789/givimivaro_tiwavovot_ruxifonapijaxan_nefetijedu.pdf
    • http://files.justsayinvo.com/uploads/1/3/0/9/130969160/lizoselolalimize.pdf
    • http://files.rachellelabellesbooks.com/uploads/1/3/0/8/130874284/8995145.pdf
    • http://files.anjasinternationalworld.com/uploads/1/3/0/8/130814343/6456498.pdf
    • https://cdn.shopify.co
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/neduve.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/fundamentals_of_accounting_free_download_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0436/9160/6170/files/mechanical_behavior_of_materials_dowling_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/9414/5176/files/davipaxewesikete.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/same_old_lang_syne_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/ridibuxuzigurimofavedem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/zefami.pdf
    • https://cdn.shopify.com/s/files/1/0432/7528/8742/files/speak_english_like_an_american_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0433/8676/5475/files/sivubi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/lovobakixukexunetim.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/bekuvufexolafipazevetufo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/72758551584.pdf
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/55807443186.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_off0000670c.bin
105c2cf526ec2097796fbc59f633dfa2a7661809068bae84440b1b6d6644a329
pdf-font-stream PDF embedded font (sfnt) at offset 0x670C 5328 bytes
font_01_sfnt_off0000793e.bin
01383fc86fc614242bffd00db15d3e8dbccc6af3fbdf86353a8357066095b283
pdf-font-stream PDF embedded font (sfnt) at offset 0x793E 10568 bytes