Malicious PDF — malware analysis report

Static analysis result for SHA-256 1997d17e45c40e98…

MALICIOUS

PDF

40.1 KB Created: 2020-08-26 07:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b3e11459c29b4057f54a2b620e5e3b0 SHA-1: ab88434497b74889838f21c6879ea9a3b4c141a3 SHA-256: 1997d17e45c40e98f7a195f74a044eb2bdc0949239a242fc2e407814f6c66367
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though obfuscated, contains text related to 'exam questions' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/pify?keyword=10.+s%25C4%25B1n%25C4%25B1f+yamuk+%25C3%25A7%25C3%25B6z%25C3%25BCml%25C3%25BC+sorular
    • http://pariziji.armisteadfarms.com/uploads/1/3/0/7/130739845/9130b5.pdf
    • http://folusulel.richmondinfo.net/uploads/1/3/1/4/131410227/169b68f.pdf
    • http://files.sarahmansfieldphotography.com/uploads/1/3/2/6/132681295/64db5e8.pdf
    • http://files.ronklipp.com/uploads/1/3/2/6/132696233/5241416.pdf
    • http://sijotexun.graceforthebroken.org/uploads/1/3/2/6/132695780/vexemawepogu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/41430543534.pdf
    • https://cdn.shopify.com/s/files/1/0437/9770/8957/files/ropizokefutemir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/bizetazukubaduxazurul.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/d_d_3._5_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0457/5297/5516/files/oecd_beps_actions_8-_10_final_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1568204463.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/436275945.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/wogudubar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/wowufibobowafi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058eb.bin
2d5e5ebbf2ab31ec6385fb3da27cf78ad7a50b29beb98180dd8826433aafcd2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58EB 5732 bytes
font_01_sfnt_off00006beb.bin
6f0416d5d16597b22e9a45f525fdd6c555142671209ef93ddca243c474dfa5b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEB 12132 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.