Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0ecc73a305263b…

MALICIOUS

PDF

38.1 KB Created: 2020-08-20 00:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bf59c019437312aa556a6f2cb50104e SHA-1: e0023d79c450fd7c71b228a67c363d576a100b21 SHA-256: 1b0ecc73a305263be28cac487fdd4426ceb47b998c248bcc636ffbfa094d6e06
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine results. The primary malicious URL is reconstructed from the document content.

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=across+the+stars+piano+sheet+music+free
    • http://files.huxtersnookercoaching.co.uk/uploads/1/3/1/4/131437552/71c7380cabfb0b.pdf
    • http://finig.leicester.church/uploads/1/3/1/0/131070711/745cbace73c038.pdf
    • http://files.alumark-gerueste.de/uploads/1/3/0/9/130969545/matozonawifumam.pdf
    • http://files.friendofgeoff.com/uploads/1/3/1/4/131483009/0e50ec.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/nugemebosogebil.pdf
    • https://cdn.shopify.com/s/files/1/0429/0877/8663/files/dakabesesawukazadaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8214/5182/files/spelling_for_grade_2_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zabaravoxetifup.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/les_cahiers_du_cinema.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/fixogixagemujowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/arch_linux_editor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4010/3845/files/encyclopedia_of_automotive_engineering_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/28302527077.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/sitefebibuzifumu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/ramawofasitosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/69705072493.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_off00004a22.bin
b027d1ce89fe4072f8421c6dea7bc14932c70b2e31cf78c7bacf34743e8e4c0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A22 5092 bytes
font_01_sfnt_off00005b3b.bin
d37f259d7e1f2f52de652325f052b57617f82bf7fb0d850914393b6f3e1b4549
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3B 10132 bytes
font_02_sfnt_off00007d1c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1C 4324 bytes