Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0a3cd63ac5cc35…

MALICIOUS

PDF

41.9 KB Created: 2020-08-15 22:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600f47070966d6d9ed9db7b6a2c3274e SHA-1: d27c4d37bdb2caea6ef9b360d1fe2a9f191a22cf SHA-256: 7b0a3cd63ac5cc359fb0b1e560ed99860af4d910815350e8058bda96f9ff71e0
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a link farm designed to manipulate search engine results. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=education+responsive+web+templates+free'. The presence of a 'download button' lure further supports a malicious intent to redirect the user to potentially harmful content.

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=education+responsive+web+templates+free
    • http://files.sahalieherbals.com/uploads/1/3/1/4/131408928/vudixedavinita_zenazitekuz_kekud_rizatap.pdf
    • http://wepimopin.twobayhorses.com/uploads/1/3/1/3/131383657/86c1dd15641b9f1.pdf
    • http://zojarid.the-therapy-centre.com/uploads/1/3/0/7/130776330/8879766.pdf
    • http://wamuxuwug.bowensminifarm.com/uploads/1/3/2/8/132814930/rogasare.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4794/3330/files/bus_interface_unit_of_8086_microprocessor.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/allergic_rhinitis_guidelines_2020_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/vuladuzawup.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/certificate_of_origin_korea_us_free_trade_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78214852322.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/84525433436.pdf
    • https://cdn.shopify.com/s/files/1/0430/0315/0499/files/11863030816.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/dakiduvusekokadilelanux.pdf
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/benedetta_rossi_libri.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.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_off00006542.bin
0a48b4fd62b1cc8dbbaf213f44aed66889c6c0f8020411d0c391218b50fddeea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6542 5552 bytes
font_01_sfnt_off00007817.bin
aec261a0083fe0b9eb564b4d125b03ba5b1f8c36eb58396fd076d47e6190f3b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 10096 bytes

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