Malicious PDF — malware analysis report

Static analysis result for SHA-256 156019742d75740a…

MALICIOUS

PDF

49.4 KB Created: 2020-08-24 08:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65b98ae432850eee6056248e1e98b3f5 SHA-1: 9bcca6832a6f324a9a4ac8c4b4fea7d93d43af51 SHA-256: 156019742d75740a2f651ae3e8adb1c0d21b3f8201356e1c1163959d4e89a840
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, includes text suggesting an 'event guide' lure, and the primary malicious URL is `https://ttraff.ru/pify?keyword=harvest+moon+back+to+nature+event+guide`. This indicates a phishing attempt to redirect users to a malicious site, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=harvest+moon+back+to+nature+event+guide
    • http://files.inspired2wellbeing.com/uploads/1/3/1/1/131163969/3320849.pdf
    • http://files.mssciencefest.com/uploads/1/3/1/4/131407823/6374592.pdf
    • http://xuzixib.edrenzi.com/uploads/1/3/1/6/131637814/wipetisewoboz-xulizoxedafug-zubot-kozonubarilili.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/96708075710.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/aarti_sangrah_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/47493335436.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/canon_lide_110_scanner_driver_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7192/files/importance_of_arabic_language_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0465/5310/4542/files/xelalal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/79812004041.pdf
    • https://cdn.shopify.com/s/files/1/0438/0157/5586/files/beckman_coulter_au680_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/45979707226.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/chelsea_handler_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/tuvolasul.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3992/files/esc_guideline_atrial_fibrillation_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/74896452062.pdf
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/54600292923.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_off000075e7.bin
e31a7471641401a21fce2c47c62001e8218602702583d3cfa044a2d8aaf02db8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E7 5332 bytes
font_01_sfnt_off000087ee.bin
90f99c4bfcc266ca7d50ef61c253f75761c9a10762a256e78455e5016c27a97c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EE 10076 bytes
font_02_sfnt_off0000aa6c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA6C 4324 bytes

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