Malicious PDF — malware analysis report

Static analysis result for SHA-256 177f408ad7fa6848…

MALICIOUS

PDF

51.6 KB Created: 2020-08-18 16:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edf4fd001e575cf3cd043c0ee984ceac SHA-1: bf176ac0a7d24d256f6da2265756a9809f324bd4 SHA-256: 177f408ad7fa6848c7a4908cad9546a2ad5d7508893bdf0cebeb6b10bfc3c2d2
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a link related to 'wow classic mage fast leveling guide'. This indicates a social engineering lure to trick users into visiting a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious.

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=wow+classic+mage+fast+leveling+guide
    • http://files.thesimplejoy.com/uploads/1/3/0/8/130874524/5047cebe48d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/tokupepibavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/8310848370.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/pdf_architect_2.pdf
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/55833804138.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0352/files/57813460669.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/4828460453.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/too_good_at_goodbyes_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7930/3317/files/44369286689.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/arithmetic_series_word_problems_worksheet_with_answers.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_off00007ee1.bin
7ed0d500d1fa7682fd43419b409aa0d4d60b1736ef73513b177b49c76c847053
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 5292 bytes
font_01_sfnt_off000090e8.bin
e2a497fe622247b7eacdc36b7ea2fa74afdac6ec2b5ca7b49c66733f33814803
pdf-font-stream PDF embedded font (sfnt) at offset 0x90E8 10240 bytes
font_02_sfnt_off0000b3ee.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3EE 4324 bytes