Malicious PDF — malware analysis report

Static analysis result for SHA-256 f900596293739e01…

MALICIOUS

PDF

35.6 KB Created: 2020-08-08 10:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7df0347f6698f37108df2c0d70e96380 SHA-1: 67b43c263b6b549339aaa265262ffc00bceaf265 SHA-256: f900596293739e01cc908a29d66bf5d56c34ac66d408d3f0cef3f4af02a6530c
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=jolly+phonics+actions+flashcards+pdf', indicating a likely attempt to redirect the user to malicious content. The presence of numerous other PDF links further suggests a link farm or redirection strategy.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=jolly+phonics+actions+flashcards+pdf
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdf
    • http://files.mishablaise.com/uploads/1/3/1/8/131871984/a52334dc.pdf
    • http://files.whereintheworldisjenniferlynn.com/uploads/1/3/1/4/131407051/fusezefulenoru.pdf
    • http://bonoti.sooversociety.com/uploads/1/3/2/7/132740892/52eff9cddd.pdf
    • http://files.metalbosco.com.ec/uploads/1/3/1/3/131398019/wowumanawesa-julejovadalib-wozak.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/77830791384.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/94697270413.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/litavepadowir.pdf
    • https://cdn.shopify.com/s/files/1/0440/0375/4142/files/paul_g_hewitt_conceptual_physics.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/38640744518.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/76377983437.pdf
    • https://cdn.shopify.com/s/files/1/0439/1452/6888/files/resume_format_for_experienced_accountant.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/bupozoxav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/campbell_ap_biology_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/61665034262.pdf
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/bowidijoriribix.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/2984/files/gonekuzoximolaja.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_off00004dee.bin
49faaeba62b32da2f4beff6f8874d898ef596e3b062b0b781c22c3b6e50334b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DEE 5336 bytes
font_01_sfnt_off00006013.bin
dd96eac41c2d779268703cd81a7455f0d2a8e4e1291d450ca43d8623cc64933e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 9916 bytes