Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e10741224d7810…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 15:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0fb2b1e310e839be2163818838c57bb SHA-1: 2c3008572797dae5eb8cc1826c1f9b23c3795dc9 SHA-256: 61e10741224d781040a5153cdbe5048118ca9197760733c6ca3ebf083bf400e6
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The presence of a download button lure further supports a malicious intent to trick the user into clicking the link, which likely leads to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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.ru/pify?keyword=autoloader+bb+z3+stj100-+1
    • http://nujis.cappuccinoandcompany.com/uploads/1/3/1/4/131407227/1134757.pdf
    • http://files.4sapservices.com/uploads/1/3/0/9/130969045/4710949.pdf
    • http://files.sweetbabiesdayhome.com/uploads/1/3/2/7/132740320/zipud_wenuv_soraminudej.pdf
    • http://files.sharingvideo.greatwebsitebuilder.com/uploads/1/3/1/4/131408170/zarakudasogu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/xulirupaxaziwumewito.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/magical_psi_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/how_to_uninstall_mysql_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/demons_dostoevsky.pdf
    • https://cdn.shopify.com/s/files/1/0434/6943/9141/files/basic_mechanical_engineering_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/bonus_calculation_excel_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9223/8745/files/shape_of_my_heart_tab.pdf
    • https://cdn.shopify.com/s/files/1/0436/5906/7550/files/69816234585.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/bidesoputilizog.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/76458628441.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23631451812.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/95428691225.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/71026813431.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/gate_2020_syllabus_for_mechanical_engineering.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_off00006603.bin
3acc9eaafbe10f6fb8bdf478a1ba575f7df8a548fd228bc27e33830242c05c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 5464 bytes
font_01_sfnt_off000078b4.bin
7537bddc3c031fbf7f672f5510ab797101675cad367198e2efefabeffcac1529		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B4 11016 bytes

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