Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5306b1e6cd477a…

MALICIOUS

PDF

49.7 KB Created: 2020-08-07 02:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c21f10fe58c49a46de9c10531e2220bd SHA-1: 88b1277109403e2d0ecc92de7446eabd866b1f10 SHA-256: ad5306b1e6cd477a494d3f6c75bdba292dbb640ad35a25f285586bf95e476806
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack pattern appears to be the distribution of a large number of links, with at least one leading to malicious infrastructure.

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=ballaststoffreiche+lebensmittel+tabelle+pdf
    • http://files.msdgloria.com/uploads/1/3/0/7/130775297/fefiwikenugefuw-jufejimolabepo-vezisup-rokazidonuv.pdf
    • http://files.rockthecatspa.us/uploads/1/3/1/4/131437619/vuwudexuj.pdf
    • http://files.wilmingtonlatindance.com/uploads/1/3/0/7/130775446/ruwomoso.pdf
    • http://files.ani-q.com/uploads/1/3/2/6/132683154/pesebabididokediwino.pdf
    • http://files.heritagelanechiropractic.com/uploads/1/3/1/4/131453208/a4c4f.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/guruwofogebijadigijazut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/luxodu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/43896064006.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1075/files/flood_filling_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/how_to_win_at_tic_tac_toe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/evanescence_everybody_s_fool_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8217/files/buxepavepinararozoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/vutonuwurexarulaxegabi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/26279066632.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/xiraxexafivulutulurapav.pdf
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/application_of_biotechnology_in_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/88033399099.pdf
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/windows_update_reddit.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_off00007ff7.bin
87eaad4ee9c1f19d344e9edd1c6159d1e9abad01ba7f382b39890d69a1299de5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF7 5584 bytes
font_01_sfnt_off000092c3.bin
862b1afd33e5f361adbb37d197261e6851ae8d1339eb104a0b7a80ac764eb39b
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 11184 bytes