Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e216f2d69d5cbd…

MALICIOUS

PDF

61.0 KB Created: 2020-08-19 04:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfd2f76d6a2a0b6868672b6ebc697cd8 SHA-1: e68633d453811c427669f0c6d853425c81d9cfb9 SHA-256: e8e216f2d69d5cbd4ef1aa5554d7e27de953947bf373452de24ab6644a818890
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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.com/pify?keyword=virginia+condominium+act+pdf
    • http://files.minisodaaussies.com/uploads/1/3/1/3/131383802/fusimuzapesis_segulibabu_fixiz_gasujufov.pdf
    • http://files.stsarkis.org/uploads/1/3/1/3/131380814/3c9c40.pdf
    • http://files.aguirrelegalnurseconsulting.com/uploads/1/3/1/4/131406807/01dddfb1.pdf
    • http://files.bluelotusbeadwork.com/uploads/1/3/0/7/130775109/nurefurabor.pdf
    • https://cdn.shopify.com/s/files/1/0437/5838/7349/files/fufategenopuzusiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/camping_norwegen_karte.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/dupibazasesi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/fugiximi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8852/files/lujosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6374/5441/files/codeigniter_style_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/2599/6698/files/money_calling_music_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/chander_pahar_book_in_bengali.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bec.bin
3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEC 2828 bytes
font_01_sfnt_off0000a5e7.bin
1f3b0c80a83b0bece966bcab2aa17106f7460a3b838e7ca8a26e1e0543f1ef04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E7 4996 bytes
font_02_sfnt_off0000b6bf.bin
facb981dce594b6e1eda60dfb72e69921e7749c0e587ce0ccbdc40d1f6fbc843		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6BF 9868 bytes
font_03_sfnt_off0000d86d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD86D 4324 bytes

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