Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6bb2bb6767c1e1…

MALICIOUS

PDF

45.4 KB Created: 2020-08-03 06:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2270cd39001e54d2f255a0b63a6ca10 SHA-1: 740d122e199f7b88561792d5ad06b1fd7ac89171 SHA-256: 9c6bb2bb6767c1e1ce8b11d6cdd8ce01588b63dd16bc088f19b1dafa282e29b0
150 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, specifically pointing to 'https://ttraff.cc/pify?keyword=tuck+everlasting+chapter+questions+and+answers+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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=tuck+everlasting+chapter+questions+and+answers+pdf
    • http://files.altoonaenglishclub.com/uploads/1/3/1/3/131379118/mokokejo-sefivafere.pdf
    • http://files.kovalabread.com/uploads/1/3/1/8/131856725/sulowepad.pdf
    • http://files.floridaselectsoftball.com/uploads/1/3/1/0/131069789/wenezisasebitesew.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/kulapitokalaret.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/nudaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/lidizizamurur.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/dime_quien_te_entiende.pdf
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/79056662733.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/garage_band_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/anaconda_python_3._6_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/didavaka.pdf
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/xowetaxupovatogego.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81397135942.pdf
    • https://cdn.shopify.com/s/files/1/0432/8770/7812/files/ritereluna.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/botoraravuxoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/pakexuvuwixedap.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/88002006697.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/
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/anaconda_pyth

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b2.bin
d26bc4fcceff9e03afd10db98a392bb604aa55ab34a8f1aeb4aa4c9aaad4f5b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 5588 bytes
font_01_sfnt_off000077b5.bin
d9b4385a653eb05c685c3a068fa866960d846387a1c246c10d8218c38ca90201
pdf-font-stream PDF embedded font (sfnt) at offset 0x77B5 10036 bytes
font_02_sfnt_off000099e9.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x99E9 4324 bytes