Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e77db06590e3bc2…

MALICIOUS

PDF

44.5 KB Created: 2020-07-25 01:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e12198066cc75ebacab6e0e2d6c65c8d SHA-1: 280eaaa392cf2970ab11dee289946ef850f9c92a SHA-256: 6e77db06590e3bc2c5cbf452b881eed276a7cafc429b97da7b5ef3381134605c
154 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 pointing to 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to educational materials. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful sites.

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.com/pify?keyword=chemistry+lab+manual+class+10+cbse
    • http://files.swisskissgreaterswiss.com/uploads/1/3/0/8/130814343/zozabugopojix_punoje_dotaxum_rudesilebug.pdf
    • http://files.chrishenkaline.com/uploads/1/3/1/3/131384468/zuzasakukubatebegoni.pdf
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://files.balletvermont.org/uploads/1/3/0/7/130739099/fabimagaxe-sobivugekojemi.pdf
    • http://files.katiecoldrickyoga.com/uploads/1/3/0/9/130969306/sutoralevamizebid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/80839951004.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/6390893368.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/87926768035.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/lusubaforovetunoronarenif.pdf
    • https://cdn.shopify.com/s/files/1/0428/5884/0223/files/19626736268.pdf
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/83940716879.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/38725654037.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/39584812044.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/jakuvogovugokatemowaji.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/78037540149.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/11157767065.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_off0000710b.bin
076986dabffdbc630a584ead9cdef203d5536ab2f5f9a750230e54aefe7a4c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5268 bytes
font_01_sfnt_off000082cf.bin
ab41ac531f5c3a328315a1ec4610bf85ce422464ddd06831c79e82e416b6142c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82CF 10032 bytes

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