Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e1b4f538bc8c3d…

MALICIOUS

PDF

39.6 KB Created: 2020-08-14 10:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a6c90108dbdfd3fda0caaf7474e9fe9 SHA-1: 694614e5200c7b55421b1d8141dde0e5de41f1b0 SHA-256: 62e1b4f538bc8c3d5a78365c7b032f6bbbf7329029e6d4af2ecffc4f911083b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a specific redirector URL, indicating an attempt to drive traffic to malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=new+hd+movies++apk', suggesting a lure for free movies. The ML classifier and PDF redirector heuristics strongly indicate malicious intent.

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.cc/pify?keyword=new+hd+movies++apk
    • http://files.eastsideyoga.co.uk/uploads/1/3/0/7/130775519/c5fec95710580.pdf
    • http://files.reefshawproductions.com/uploads/1/3/1/3/131398143/dutuzunemiroxaki.pdf
    • http://kigenuwor.bencoga.com/uploads/1/3/2/7/132711991/a702e14ef24.pdf
    • http://files.drwasniewski.com/uploads/1/3/2/3/132302963/f740c472d74b601.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6948/0866/files/55562804626.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/tolixizijuxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8185/files/40781432489.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/tagawixatilanegabug.pdf
    • https://cdn.shopify.com/s/files/1/0454/6186/4606/files/gakakoxok.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/modibokekidupav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/necronomicon_anunnaki_bible.pdf
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/23224643484.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/mipowu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/14367544157.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c20.bin
e88f1d639618e8f4a734b466872a08572c7a1971a216222fdc5ba4e046d2d8c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C20 5256 bytes
font_01_sfnt_off00006e02.bin
709ba7708037a96d0f7dc7e46f3ed841d3b60576c3e3d1496078efc2927f8d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E02 10484 bytes