Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6ea7fe7c401707…

MALICIOUS

PDF

98.9 KB Created: 2020-08-08 03:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e701a755007753121404cf70d06e13f SHA-1: 5385d2939a97e3ce9b9639a3df22ce44165914c8 SHA-256: cc6ea7fe7c401707a0ac6f7193e957d4070e58c1aafc9befd41c78b12e3d82c9
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'drug induced liver injury guidelines pdf' and the malicious URL. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malicious content delivery attempt.

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.com/pify?keyword=drug+induced+liver+injury+guidelines+pdf
    • http://gader.drleventhalbelfer.com/uploads/1/3/1/3/131379732/vubirogukojodezevuri.pdf
    • http://files.yukonsbeard.com/uploads/1/3/1/3/131379719/5431825.pdf
    • http://zujilud.shamanicreikiworldwide.com/uploads/1/3/0/7/130776644/kobubulugarusonugak.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/74137317156.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/detowavuvugizosiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/42168773446.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/wopamifijen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/14061107328.pdf
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/zajelimuwedupe.pdf
    • https://cdn.shopify.com/s/files/1/0435/4850/8311/files/wta_beijing_draw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9965/9176/files/kodebat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7845/files/talesaginilizarij.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/github_how_to_delete_a_branch.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/fadiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/kizuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/34065307745.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/57637216124.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/rexeru.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_off00012c18.bin
499c5558553b0849a1cbe4dd644e83848b72f2f9e4915c10cd20d181ef18b9d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x12C18 5348 bytes
font_01_sfnt_off00013e80.bin
0030b0490ce3612c53fadd8e45a03306ab5ac0097577066a18e6bb8aa5e975e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x13E80 13196 bytes
font_02_sfnt_off000168f3.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90
pdf-font-stream PDF embedded font (sfnt) at offset 0x168F3 16060 bytes