Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26e78690a4711d0…

MALICIOUS

PDF

48.3 KB Created: 2020-08-11 16:39:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06e1aca3fda42f98370d7f861e1569e8 SHA-1: 4e6fa56b0c541560730999dece9919797475ed46 SHA-256: f26e78690a4711d0fe10042ae3ba19baa869a4c31752e4424ce7efefb3bc5640
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, however, directs to a known malicious redirector at 'ttraff.cc'. This suggests a phishing or social engineering attempt to redirect the user to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=business+narrative+report+sample+pdf
    • http://files.orchidbakery.co.uk/uploads/1/3/0/7/130740130/zozitopizokuxiguvomu.pdf
    • http://damutot.crystaldull.com/uploads/1/3/0/7/130776485/tefosobixuwekuw.pdf
    • http://files.onewesterra.com/uploads/1/3/1/6/131636807/figaxolofupaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/cambridge_certificate_advanced_english_3.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/42595158229.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/4208249982.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/numenera_rulebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/84920894609.pdf
    • https://cdn.shopify.com/s/files/1/0439/4106/8958/files/lowes_leominster_ma.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/4958521923.pdf
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/8098327274.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/bubble_answer_sheet_1_40.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/linear_systems_and_signals_lathi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6586/8437/files/wagetifofuzopolak.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/certificat_cession_voiture.pdf
    • https://cdn.shopify.com/s/files/1/0432/4157/0466/files/32528118485.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_off00007fda.bin
5babdcadca683091ce053f0ba828dc1209d3b10c324e5c6e69c9871e041a545e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDA 5296 bytes
font_01_sfnt_off000091ca.bin
71f4565c56c981ba5854423038df7198855454da2a8f69499a27023e0713b571		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91CA 10024 bytes

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