Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e515792276ecf1…

MALICIOUS

PDF

47.4 KB Created: 2020-08-14 23:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e37a0b70aa155df6bff4d6b6ee861c SHA-1: a058bd22bfc3e7682f27f89a0a22982189d1eb25 SHA-256: 02e515792276ecf12b944a629ea5aed858e03e82bfd1e04e44265be5f600d18e
154 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Bihar daroga form fill up' and embeds numerous links, including a critical redirector to 'https://ttraff.cc/pify?keyword=bihar+daroga+form+fill+up'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=bihar+daroga+form+fill+up
    • http://files.srsca.org/uploads/1/3/1/6/131637553/kegitegefunasu-zirasibajusuwoj-robodove-wovifatuka.pdf
    • http://files.csbcstatesville.com/uploads/1/3/0/7/130776206/tukoturituva_muvupewan_bomex_tevelebevutagak.pdf
    • http://files.melaninmasks.net/uploads/1/3/0/7/130775912/wezixukuzumudokobib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/40142943142.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/kagej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/80709112462.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/21664743139.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/duxavaduwusigusovumavudog.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/tafofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/zodekutufolu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/advanced_engineering_mathematics_zill.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/nufokidozudiwopivogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/vozexonafezunokezor.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_off00006f2c.bin
222a17bd09613ed365c734df096cba4763670a2a50c3d82a4abc548deeb13dd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2C 4904 bytes
font_01_sfnt_off00007fcd.bin
49190f8ead037d3766fbbb31d038b81b9c0c1bff0c92534abe43cc85ea472147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCD 9796 bytes
font_02_sfnt_off0000a158.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA158 4324 bytes

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