Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18f8c4958855718…

MALICIOUS

PDF

37.4 KB Created: 2020-08-14 03:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb2d19bb2880a7ef86b624dbd528670b SHA-1: 25c81726c3504c66cabf546de237818f05b421bd SHA-256: c18f8c4958855718b7745491ebd00614da064acb25d360c20f518d33191dee79
150 Risk Score

Malware Insights

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

The PDF contains a link disguised as a product manual, which redirects to a known malicious URL. This suggests a phishing or social engineering attack aimed at directing users to malicious content. The PDF also contains a large number of external links, many pointing to Shopify, which is characteristic of SEO-based link farms used to manipulate search engine rankings or distribute malicious content. No scripts were extracted, but the primary malicious action is the redirection via the embedded link.

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.cc/pify?keyword=bounty+hunter+metal+detector+pioneer+202+manual
    • http://mogutezi.northstardmd.com/uploads/1/3/1/3/131383657/3394877.pdf
    • http://files.lifeandpeacephoto.com/uploads/1/3/0/7/130739112/1e27e2dca4.pdf
    • http://files.thebrockenhursttaxis.com/uploads/1/3/1/3/131383247/2383530.pdf
    • http://files.onebodywellnesscoach.com/uploads/1/3/0/7/130775362/5001873.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/gubefudobaribiviwizu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/18977822730.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/gekuvizosemozebuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/sakiwopesur.pdf
    • https://cdn.shopify.com/s/files/1/0436/1184/8861/files/additionsverfahren_aufgaben_mit_lsung.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8909/files/kepulewoniradogagowinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8194/8567/files/50719538140.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/mon_maroc_abdellah_taia.pdf
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/biblia_de_estudio_vida_plena_completa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/xowubarasevopiwivalaxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/romirugufikupibagawenura.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0549/files/sample_letters_of_good_moral_character.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/abnormal_child_and_adolescent_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/9361899843.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/best_free_aquarium_screensaver_windows_10.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_off00004fbc.bin
12a771a6799729b51b641bc724cfb90140c1f6ab28f24bd01f5fd9b5b7524d03
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBC 5560 bytes
font_01_sfnt_off0000627b.bin
595d34a10465111d3f21dd42688053724f94a104fa6a09bb8d3345be3b350b47
pdf-font-stream PDF embedded font (sfnt) at offset 0x627B 11812 bytes