Malicious PDF — malware analysis report

Static analysis result for SHA-256 378c364e0e97526e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 16:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bb48182535599f56fcb5cf2eb66af7d SHA-1: 2df36ffe146c6c4058f97c353d6e2926e41d6994 SHA-256: 378c364e0e97526e6210cb827d50513057a48d4c3237117ed6d817222c2a1ca8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=barcode+font+not+showing+in+pdf'. This suggests the document is designed to redirect users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO poisoning or to obscure the malicious destination. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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=barcode+font+not+showing+in+pdf
    • http://files.petraszeman.com/uploads/1/3/1/4/131437139/16fbbcfac3a.pdf
    • http://files.kandcmusic.com/uploads/1/3/0/7/130775633/0c21dd596f0.pdf
    • http://wulima.coburghighhistorical.org/uploads/1/3/1/6/131606289/medewovimelos_vuvirerabod_nejafulates_gokoposuti.pdf
    • https://cdn.shopify.com/s/files/1/0432/0457/5387/files/bhajan_aarti_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0436/1427/3698/files/wibizevexofigi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/32155097400.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/lodijimetasakimiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dilos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/57206971537.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/69781268172.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/nicolas_bourbaki_theory_of_sets.pdf
    • https://cdn.shopify.com/s/files/1/0436/4386/3198/files/trx_golf_workout.pdf
    • https://cdn.shopify.com/s/files/1/0447/8933/4177/files/bsc_banking_awareness_book.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_off00005bb4.bin
154a10c7a691ff8e69f3300db7f5513d86ff2211e3c51b15eb05d16861c21f40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB4 5528 bytes
font_01_sfnt_off00006e88.bin
3c5c76acc059fcaa4c16f6c8e199f728780d7475278cdc9f33df108879f19665		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E88 9968 bytes

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