Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce146888b64107c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 22:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3dbc99a3a56f51087a88ec2356d2053 SHA-1: 93b26846302ff4b576d47628cac1a367f7f0a0f7 SHA-256: 9ce146888b64107c354d9dd4352605ee783e417056ede8e0017bee08c4b9b0c3
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=brahm+kavach+path+download+pdf'. The document body, though heavily obfuscated, includes this URL and appears to be a lure for downloading a PDF. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

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=brahm+kavach+path+download+pdf
    • http://files.mrsdavisswghs.com/uploads/1/3/1/4/131406441/b5167d1b21061a.pdf
    • http://files.noirfashion.net/uploads/1/3/0/8/130814052/bopemud.pdf
    • http://jawer.rosesfloristbiloxi.com/uploads/1/3/2/8/132816066/kijesumi.pdf
    • http://files.geopiano.orduns.net/uploads/1/3/0/7/130740429/sikav.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/55038874699.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/60787496819.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/49566594318.pdf
    • https://cdn.shopify.com/s/files/1/0450/1107/5222/files/autocad_lab_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/rock_forming_minerals_in_thin_section.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/dragonwings_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/equifax_credit_report_dispute_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/44242522000.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/31872166470.pdf
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/bemefujutorubaxujivev.pdf
    • https://cdn.shopify.com/s/files/1/0432/4887/7736/files/58498567051.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d7.bin
b4b1cd4417215a61e7d9a4244bc97e35dc28aaac2d7712fe869c8875f9ed8ab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D7 5104 bytes
font_01_sfnt_off00006414.bin
4854e12aa476bdc839b39200cf03f6e4f374a15781c52a2771140a7302edc021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6414 14640 bytes
font_02_sfnt_off000091fb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91FB 4324 bytes

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