Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f3603eddfbf7cb1…

MALICIOUS

PDF

44.9 KB Created: 2020-08-27 23:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c58efd2bddda55d801981bb0782573 SHA-1: b1723c4166b6c203eac3bade69b99877c9278b23 SHA-256: 6f3603eddfbf7cb16aee1448c7c18f331ae29553603bf00c7c1fbd80134d3b7c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector to malicious infrastructure, indicating an attempt to lead users to harmful content. The ML classifier also flagged this PDF as malicious with high confidence. The embedded links, including the one to 'ttraff.club', are likely part of a scheme to distribute malware or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/pify?keyword=why+did+chernobyl+happen
    • http://files.congioia.org/uploads/1/3/0/7/130740173/7669395.pdf
    • http://goxitilot.wildharehome.com/uploads/1/3/1/3/131383813/422183.pdf
    • http://timik.thestoneconstructioncoinc.com/uploads/1/3/2/8/132814930/1dc7ae3feca.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/biserial_correlation_in_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/descargar_sticker_maker_for_whatsapp_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/actionscript_3._0.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/40321138522.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/57767848423.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/wapaneweta.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/75783291059.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/afmg_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5517/7109/files/78305684224.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b5.bin
f3e948ab07f32483d0fafd5ad92c2cad9787cfbc54754b2926e89d4ba5ac6bdb
pdf-font-stream PDF embedded font (sfnt) at offset 0x65B5 4948 bytes
font_01_sfnt_off0000766b.bin
1e7e10241b9179c79f282d01ecf007cf2cd4498150506ec4b48b9afd93b17f11
pdf-font-stream PDF embedded font (sfnt) at offset 0x766B 10112 bytes
font_02_sfnt_off000098ee.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x98EE 4324 bytes