Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c06218b83b69fff…

MALICIOUS

PDF

43.7 KB Created: 2020-08-23 13:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b02c7771ded725e688758a09aa8e563 SHA-1: 1e21ea77f710b24230dcbcf4cde3d0e1816d64d6 SHA-256: 2c06218b83b69fffe81d7ca1730ecff3e86f488968652c3b73b325c97ea5fbbd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a 'project report' lure, which aligns with the redirector's keyword parameter. The primary malicious IOC is the ttraff.com redirector, which likely leads to further malicious content or downloads.

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=project+report+on+biometric+security+system
    • http://lasapexo.sechodb.com/uploads/1/3/1/8/131871390/somegutudole-jidejixow-bosudu-kafolowudobij.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/pekosibagejes.pdf
    • https://cdn.shopify.com/s/files/1/0433/1857/5262/files/99226848922.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/optical_isomerism_organic_chemistry_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/advanced_vocabulary_in_context_with_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/environmental_impact_report_cost.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/danuwiguderodojobup.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/wewotoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/bopedibabejunuposofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/australian_super_compare_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/katyusha_sheet_music_accordion.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/92318918442.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/72141943203.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_off00006d73.bin
a7c96459ee58338b8ca7c0f3f600fd971abfbcf1821bdead51cd49cca9755486
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 5156 bytes
font_01_sfnt_off00007ef1.bin
bf9ea600c9c75c6449b0784e0b08935d1c166af0b7013c119980f962a3f03d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 10304 bytes