Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8285f8529a0558…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 23:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1dcd70b05500f5517c8ac337020b812 SHA-1: 245d52b2f7e496335005f22d58e8637c3906ca7c SHA-256: 3f8285f8529a05588c2cfc0af81654ad557d6023d59297163e1bbe0e7606464f
152 Risk Score

Malware Insights

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

The PDF contains a link farm of numerous PDF files hosted on Shopify, with one critical link pointing to a known malicious redirector at 'ttraff.cc'. This suggests a phishing or malware distribution campaign. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/pify?keyword=ricky+ticky+tavi+movie
    • http://files.michaeljcrites.com/uploads/1/3/0/8/130813317/3130995.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/63439111576.pdf
    • https://cdn.shopify.com/s/files/1/0436/6493/3014/files/80253583816.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/exploratory_data_analysis_with_r_roger_peng.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/bijection_rciproque_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/nomemux.pdf
    • https://cdn.shopify.com/s/files/1/0432/1289/8461/files/difokus.pdf
    • https://cdn.shopify.com/s/files/1/0440/5595/3558/files/binary_number_multiplication.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8612/files/business_english_phrases_for_reports.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/75478995141.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_off00006074.bin
fd627c228543a66555f72703fc194cb05ae6ea4b8dd6245fc347fc106cd9eba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 4872 bytes
font_01_sfnt_off0000710a.bin
12035219e9adc3b80d9fb882f2ae62ecb41ce86478b4c831f5f1cf404e4b8617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710A 10920 bytes

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