Malicious PDF — malware analysis report

Static analysis result for SHA-256 029949e8c396efa9…

MALICIOUS

PDF

50.0 KB Created: 2020-08-12 07:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748bb32673a7e247a44954287b8f0a39 SHA-1: ac40e7cca905b75ca06d234d694b9265531f9156 SHA-256: 029949e8c396efa9630f9741cfa715823e980c5f43e28eddb2379d9b8dd4053d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though obfuscated, includes the same URL and a keyword suggesting a lure related to authentication methods. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of 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.com/wb?keyword=authentication%20methods%20pdf
    • http://files.ronyahperformingarts.com/uploads/1/3/0/7/130740231/jatanu.pdf
    • http://zadumer.ddepict.com/uploads/1/3/0/7/130775432/foruzavagajab.pdf
    • http://kamurod.ericavannon.com/uploads/1/3/1/1/131164250/6228943.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/35088200415.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/tabibugulag.pdf
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/nakabatofoguderogo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tepumesuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/xiwapuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/jquery_remove_children.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/pazilu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5966/7363/files/26500153542.pdf
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/astaghfar_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdf
    • https://cdn.shopify.com/s/files/1/0441/2204/6616/files/25128674754.pdf
    • https://cdn.shopify.com/s/files/1/0432/8128/5286/files/cabot_trail_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/99128118930.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/rolixuni.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_off00007821.bin
6c113ea27c5b657f18a9294142c63835ae7a591b8591020aad6ed3616277ef19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7821 5136 bytes
font_01_sfnt_off0000896d.bin
a7704c269d1ee38626a1705102c079ff8d5bc906ee1d1bdc23df3af4f7353d4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896D 10352 bytes
font_02_sfnt_off0000acc7.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACC7 4324 bytes

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