Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a18eddec1ff843c…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 02:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f236b7ad8c6d7ff6a5b7582c8c16d54 SHA-1: d0297a18b27478ba31e3a5de07348def5dcfc5f6 SHA-256: 3a18eddec1ff843c153b7360d89bb3ca83b53bfb9bb253a85a4e46769621f3fe
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a PDF redirector link to 'ttraff.cc' which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Android barcode scanner' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. 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=android+barcode+scanner+fixed+focus+camera
    • http://wufaw.talltaleswithpoppynwosu.com/uploads/1/3/1/4/131453177/fumapa-rezojavopugi.pdf
    • http://files.chatswooddensitometry.com.au/uploads/1/3/0/9/130969966/5792248.pdf
    • http://sozuvegu.livinmybliss.com/uploads/1/3/1/3/131379326/8145980.pdf
    • http://mitega.geisterwolfeshepherds.com/uploads/1/3/0/7/130775413/famiwaxujujam.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/jifigivopanasoxikumedun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5175/3380/files/jilajojuzawuroguni.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/finobimebebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/vi_select_all.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7563/files/tolib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/61589312769.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/99628021631.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/anatomy_of_brain_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/54414859538.pdf
    • https://cdn.shopify.com/s/files/1/0447/8969/4630/files/rozifabuxesexinizegatuvon.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/uptet_written_exam_syllabus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e93.bin
f644bb7f03d81a382d54b3cfc51aa54bd7534d90eac3d7de611a3a37b72eae82
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 5132 bytes
font_01_sfnt_off00006fe0.bin
3c5c76acc059fcaa4c16f6c8e199f728780d7475278cdc9f33df108879f19665
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE0 9968 bytes
font_02_sfnt_off00009210.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9210 4324 bytes