Malicious PDF — malware analysis report

Static analysis result for SHA-256 9424a16ddc4289a4…

MALICIOUS

PDF

46.8 KB Created: 2020-08-02 17:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a341f89b9c1102dd9dd67ec5f0fc7f57 SHA-1: 317f1d89def107875854b0218618f1f34ddaa68a SHA-256: 9424a16ddc4289a4f62fff3d2f8dc2277c02b494f822129dceda78541223ef9d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=how+to+make+the+ender+portal'. The document body also contains this URL and numerous other links, indicating a link farm strategy. The primary intent appears to be luring the user to the malicious redirector via a seemingly innocuous topic.

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=how+to+make+the+ender+portal
    • http://files.wsosc.org/uploads/1/3/2/8/132814929/1056492.pdf
    • http://files.proorganizerslv.com/uploads/1/3/0/7/130775786/9177951.pdf
    • http://merej.berrybrook.us/uploads/1/3/1/3/131384401/8440ca.pdf
    • http://files.bkkaustralia.com.au/uploads/1/3/0/8/130873880/de8d0fc4a5.pdf
    • http://files.starclassfilms.com/uploads/1/3/1/4/131438098/biziw-jovazido.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/64149033338.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/ruwoxalideseziwabu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6482/files/86269087976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/31801146429.pdf
    • https://cdn.shopify.com/s/files/1/0434/7992/4893/files/buwafazefodufalimazem.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/58582193435.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56666804065.pdf
    • https://cdn.shopify.com/s/files/1/0440/7354/9974/files/wunedevumep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0142/files/jorivesifowile.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/86609473152.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/wajutobezilenojifaxife.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdf
    • https://cdn.shopify.com/s/files/1/0438/2998/5430/files/beranigiwinunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/food_safety_manager_certification_study_guide.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_off00006ba1.bin
97d72f59f8ec33b4d9b7e222097c072dbb9f8b12ab20703710dd6ea18b0d71da
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 4880 bytes
font_01_sfnt_off00007c10.bin
1f90fc235c4e3f5280911e3fc9ca24bbeec32285a0e6301d682d63d12c22f5fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C10 10568 bytes
font_02_sfnt_off00009fdd.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDD 4324 bytes