Malicious PDF — malware analysis report

Static analysis result for SHA-256 3396c4357b3fb146…

MALICIOUS

PDF

78.2 KB Created: 2020-08-13 06:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab0b18aafb63c24a0f7c1f13cf97a97a SHA-1: 4349b6e8eac7d213be9ecd55b81bd58cf95eb2f3 SHA-256: 3396c4357b3fb1460481315325a5acc7a9e2c22b28b06eef7734ce9e866a9c4b
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, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary purpose is to redirect the user to a malicious site, likely for further exploitation or phishing. No scripts were extracted, and the PDF structure itself is the delivery mechanism.

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=nts+analytical+reasoning+questions+pdf
    • http://files.childconsultant.org/uploads/1/3/1/6/131606260/gerurav_labexelativub.pdf
    • http://files.crmoawareness5k.org/uploads/1/3/0/7/130740517/17756edf68.pdf
    • http://boboxo.thesettlementclinic.ca/uploads/1/3/1/1/131164250/6c7fc12b84570.pdf
    • http://files.mytutorandmentor.com/uploads/1/3/0/7/130775870/e00286.pdf
    • http://files.sunshinebehavior.com/uploads/1/3/2/6/132681579/suwon.pdf
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/sovowinalo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/light_novel_arifureta_shokugyou_de_sekai_saikyou_bahasa_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/kotisex.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/methyl_cellulose_journal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/lusixutapikikosulojo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/sesofufaxife.pdf
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/72687843247.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/67675570079.pdf
    • https://cdn.shopify.com/s/files/1/0436/0493/4814/files/xomesomaxuxipu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5574/2114/files/nubetujotujej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/manual_de_cade_simu_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/dakasinofema.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_off0000e67a.bin
59b4cedd8a0693e856c49f14dd3cd9348df711114b77d9fda88399bd8d75e1b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE67A 5404 bytes
font_01_sfnt_off0000f8de.bin
afeecc3aefacbd4441ab40ea0ad7c97d1f32fb50a06a4b8989a89f07ff08ef91
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DE 10696 bytes
font_02_sfnt_off00011d43.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D43 4324 bytes