Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73bf318a40e4366…

MALICIOUS

PDF

97.8 KB Created: 2020-08-21 11:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee5001a327735ec9a3e815328551908 SHA-1: 6e55fe87f04c32c1fcc9728a8f6a596b2609e904 SHA-256: c73bf318a40e43661f69ff3f670891353ca05fe0dc0cf7c00d53d1e7842f015f
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=information+about+anuradhapura+kingdom, which is also listed as an IOC. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm designed to manipulate search engine results, likely to distribute malicious content. No scripts were extracted from this sample.

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=information+about+anuradhapura+kingdom
    • http://files.lakewoodfamilyhealth.com/uploads/1/3/1/6/131637658/jubanofuredufugedade.pdf
    • http://files.philadelphialogisticscenter.com/uploads/1/3/1/1/131164476/jokimolomi.pdf
    • https://cdn.shopify.com/s/files/1/0447/0836/4444/files/apostille_texas_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/algebra_all_formulas_file.pdf
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/feel_good_inc_sheet_music_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/violin_arpeggios.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/a_clockwork_orange_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/nusigovetute.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/bodmas_rule_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/talebuvulexejemesake.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/xipojanox.pdf
    • https://cdn.shopify.com/s/files/1/0435/9687/3885/files/suronejugutazanu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/mevusobasefupe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/clinical_pharmacist_resume.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001091c.bin
6676b000553b229f6ebd8c844bd81db53be30e731bec1c840b56ac23f1862cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 5152 bytes
font_01_sfnt_off00011a53.bin
4d4050bd6f32484b470ce6f90ed8c76309be57813e5d654950ff5ed045a9b1ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A53 4184 bytes
font_02_sfnt_off000129c0.bin
8e15af3f4c4c78127bda81a9bd5227b7adfe2497ecc829ffdfb34593dbf56f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C0 10184 bytes
font_03_sfnt_off0001481a.bin
5ce92976e90b84287d701ded0ab59faab8a47b57313c64ea46ad9090b12ac38f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1481A 10188 bytes
font_04_sfnt_off00016aff.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16AFF 4324 bytes

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