Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef9b84c90e77d5c…

MALICIOUS

PDF

38.3 KB Created: 2020-08-14 15:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68cd707ee67d4675c1264380ba983228 SHA-1: 2cdfcfed03a1149211b5e714b08d4d1ceedbab08 SHA-256: 7ef9b84c90e77d5c04ee3e0feb11dae6e418160e9c56ebd7c8f2e1fb1b13c4b9
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=beta+profile++ios+13', which is also flagged as malicious. This suggests the document's primary purpose is to trick users into clicking this malicious link, likely leading to a further download or phishing attempt. The presence of a 'download button' heuristic reinforces this user-interaction lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=beta+profile++ios+13
    • http://files.catmaness.com/uploads/1/3/1/8/131856129/zazawupojugozafob.pdf
    • http://zaziludav.zeeamerphoto.com/uploads/1/3/0/7/130740141/3939488.pdf
    • http://files.iambriannna.com/uploads/1/3/1/4/131452735/2257364.pdf
    • https://cdn.shopify.com/s/files/1/0447/1911/2345/files/tutorial_arduino_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/91756007916.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/jurnal_kandungan_gizi_ampas_tahu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/zibanuburilukulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/xijikufupisamosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/16955460749.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/siparudaxub.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/weedeater_carb_adjustment.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_off00005a1e.bin
ab04c770eb4ab2e6f18aa6ab1cff4ffc857da38fb70b6d73943ed796e83c4912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 5160 bytes
font_01_sfnt_off00006bbe.bin
0e273cab58e1681bbfce133a7d6810972067680cfbc34df2746b6c936d16d0cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBE 9748 bytes

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