Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7ad3a4739b1660…

MALICIOUS

PDF

89.7 KB Created: 2020-08-02 02:24:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de5a73f0c82082a48c61b10a93d0396 SHA-1: 37213faae3aa2ed63cd47fa7b666216ed86eb55b SHA-256: 2e7ad3a4739b1660574eb4187869512aded7768ca0afac3f0a7ad521f715b3aa
120 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, pointing to 'https://ttraff.cc/pify?keyword=pretty+ugly+poem+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the redirector URL, suggesting the primary intent is to drive users to this malicious endpoint. 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=pretty+ugly+poem+pdf
    • http://files.hd-crafts.com/uploads/1/3/1/8/131856394/katafunof-lewotoxoveja-mogafubokaloz-vuluva.pdf
    • http://files.charlesskiera.com/uploads/1/3/2/3/132303150/xofejeguzole-mukekomesigoxew.pdf
    • http://files.giornatadellostudente.com/uploads/1/3/2/7/132710776/zifogokiluzon.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/wadakepog.pdf
    • https://cdn.shopify.com/s/files/1/0430/0157/7625/files/linusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/sakejaxuzowefoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/revozaperopevuragi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/dekabek.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/85983471953.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/47882366470.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/71588706669.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/gopojowararexowugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/77817211748.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/mogulinogereloninazajepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/15116057497.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_off00012460.bin
c9550bd81f305532bcbeca7b9e840e4f7758a3423cbcedf686b01b0b525e2e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12460 5076 bytes
font_01_sfnt_off000135a0.bin
7f88190d0962ec5202cf5d2ba610d630e7d0454e61e7af8ac238051f55359ad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135A0 10660 bytes

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