Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e18d9773947a8e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 08:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8deecfe24a6c74573540b7e0025db96 SHA-1: 39bd0031f95a9d352f0253c81dd9ab9304c2a93e SHA-256: e8e18d9773947a8e146b002b23f6fbce460c49e64207594e2f91ad0a6843eb3d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'screen capture app apk' download. This suggests a phishing or malware distribution attempt. The document also features a large number of embedded links to Shopify-hosted PDFs, indicating a potential link farm for SEO poisoning or traffic redirection. The ML classifier strongly flagged this PDF as malicious.

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=screen+capture+app+apk
    • http://files.brendagratton.com/uploads/1/3/2/3/132302966/b6d30e.pdf
    • http://sovel.tdpbooks.com/uploads/1/3/0/7/130739275/8e70dddc7b70262.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/psychology_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/torupinoxewav.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/28842258253.pdf
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/79721265876.pdf
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/10379623624.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/papural.pdf
    • https://cdn.shopify.com/s/files/1/0450/9509/2376/files/taylor_introduction_to_error_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/bhagavatam_dasama_skandam_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/konewodejefobavirivuvorab.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_off00006546.bin
c2bd67cba3a94a190e9fe8b6e63e78a642d5707d74d6270b3a737d0e3f9e753c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6546 4884 bytes
font_01_sfnt_off000075ea.bin
f58495ce73497e39edc23d0cf5db0782ed00babbc29d866efb746aaff5bff43a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75EA 10828 bytes

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