Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae26e9202219708f…

MALICIOUS

PDF

52.6 KB Created: 2020-08-01 14:54:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d54f1cf0139638da8d32cbfe496eb4f8 SHA-1: 0aa068d5ebece1fcbe92ede748a3b2e18e0f3df5 SHA-256: ae26e9202219708f6caaf7fb51a348a1fc303cda1e1c7f327ee02f8aeec39fdc
152 Risk Score

Malware Insights

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

This PDF document contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The primary malicious URL, https://ttraff.cc/pify?keyword=volume+of+solid+calculator, is designed to redirect the user to further malicious content. The document also contains numerous links to PDFs hosted on Shopify, likely part of an SEO poisoning or link farm strategy to obscure the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=volume+of+solid+calculator
    • http://files.atdesignpartners.com/uploads/1/3/0/7/130775649/sobipawidi.pdf
    • http://files.differentpicture.co.uk/uploads/1/3/0/7/130776571/4932006.pdf
    • http://files.corinnegarcia.com/uploads/1/3/2/7/132712332/wirinitiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/wesefafuzixasomibukev.pdf
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/losireluzopovur.pdf
    • https://cdn.shopify.com/s/files/1/0432/1008/0420/files/wuwavo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/94671861752.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/konevosafajugoli.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/lesifugonotujerurupur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/24729007280.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/50354577207.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8259/files/23039757254.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/pejikizefanorexemuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0074/1531/files/tatetileloki.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/56561203282.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/deduwukisusitufuvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/tixonuruz.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_off0000864f.bin
8fdfe12fe1d18365dcffef997ffa19717318b224acee018c2946785a51b835a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x864F 5132 bytes
font_01_sfnt_off000097b3.bin
163afcb7bb0cf146e29494ea33006201c53166037b524dccf83fc36b8efc5443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 14664 bytes

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