Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc1160cd2196089…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 17:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 044af5cf4bc6ca7438aa27cdfb9295d7 SHA-1: 4b8c887427e95caaebefb7716de55942c10dceb8 SHA-256: ecc1160cd21960898552f577475714fb0c2098cc05fa096528f8a82877e9db46
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'black and white portrait photography pdf' and a URL that matches the malicious redirector. This suggests a phishing or scam attempt to redirect users to malicious content.

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.ru/pify?keyword=black+and+white+portrait+photography+pdf
    • http://files.newellchristianschool.com/uploads/1/3/1/3/131380889/4aae5.pdf
    • http://files.ajreisingerlab.com/uploads/1/3/0/7/130739232/jesizezutalumoremo.pdf
    • http://files.preservationsc.org/uploads/1/3/1/6/131637099/1509000.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/proposal_skripsi_ahwal_syakhsiyah.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/lizonezupugepawuxenadakof.pdf
    • https://cdn.shopify.com/s/files/1/0434/6730/9206/files/sofakupatepabo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4301/9159/files/37608043716.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/autoformation_windev_17.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/watermark_acrobat_pro_dc.pdf
    • https://cdn.shopify.com/s/files/1/0443/9041/6550/files/list_of_egyptian_symbols_and_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/toliwutekivow.pdf
    • https://cdn.shopify.com/s/files/1/0447/8337/0397/files/suwagoroxog.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_off0000627f.bin
2e9cfcdc6f0f00df0ec6c9323ee32b7cb9680657e8ef3fdf130c8f9bcb433275		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 5548 bytes
font_01_sfnt_off0000756a.bin
9675748d0a2a2bc20401f024dd88c7e45544024d9b6a292b2180edc63b96e40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 9488 bytes

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