Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7b83b312e749b0…

MALICIOUS

PDF

40.4 KB Created: 2020-08-17 17:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a896d3b2446a289257b0219e5028b014 SHA-1: afecb31f66c5bf7cfbe7d1a24f61e6366c92eedf SHA-256: 1f7b83b312e749b0a27941faf3a008a93cd8d938aa17a02f3982bbfe8d826af6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=iphone+5s+caller+ringtone'. This indicates a social engineering lure, likely to trick users into downloading malicious content or visiting a phishing site. The document also contains a large number of embedded links, many hosted on Shopify, which is flagged as a link farm, further supporting the 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=iphone+5s+caller+ringtone
    • http://files.srflasvegas.org/uploads/1/3/0/8/130874250/1479312.pdf
    • http://penabepa.brotherwade.com/uploads/1/3/0/8/130874493/9e09f.pdf
    • https://cdn.shopify.com/s/files/1/0434/6442/5634/files/rabivufiwake.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxajuvorupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/pinox.pdf
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/79820685424.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/gakozekotowerepox.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5694/files/play_ms_pacman_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/6618/7176/files/27327761008.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/zirobumafuzewaranegogovug.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/glock_diagram.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602b.bin
b02b58bf310a017ea9d05df351bba4ebcd6999b927ea4f437d2955c0c4936c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602B 5256 bytes
font_01_sfnt_off000071fc.bin
432fbfc7e8f8e4094eae2699208ed81aa70339ee696aff873c9d3494ecf8f39e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 10272 bytes

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