Malicious PDF — malware analysis report

Static analysis result for SHA-256 be564da8f5bac836…

MALICIOUS

PDF

44.7 KB Created: 2020-10-09 00:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4ccb129582571d078717944a2f00c5e8 SHA-1: bb8839d6b0404601facc14b4d21765db516c3a30 SHA-256: be564da8f5bac83686a0179752fd51c38a7dd9ae1e496bc0fb36a0ea1790746f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically `https://ttraff.com/pify?keyword=zippo+butane+fuel+near+me`. The document's structure and numerous links suggest it functions as a link farm designed to lead users to malicious sites. 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=zippo+butane+fuel+near+me In PDF document text
    • https://site-1041688.mozfiles.com/files/1041688/47780147881.pdfIn PDF document text
    • https://site-1042590.mozfiles.com/files/1042590/71893408459.pdfIn PDF document text
    • https://site-1039346.mozfiles.com/files/1039346/76966445815.pdfIn PDF document text
    • https://site-1039320.mozfiles.com/files/1039320/37930063395.pdfIn PDF document text
    • https://site-1040124.mozfiles.com/files/1040124/wujerepubefele.pdfIn PDF document text
    • https://site-1036957.mozfiles.com/files/1036957/80861659714.pdfIn PDF document text
    • https://site-1037024.mozfiles.com/files/1037024/8315238180.pdfIn PDF document text
    • http://kekutaba.spotlighteditorial.com/uploads/1/3/0/7/130775840/68a76a5f30606.pdfIn PDF document text
    • http://dowar.shoppingforagift.com/uploads/1/3/0/7/130739173/7847082.pdfIn PDF document text
    • http://files.itqansports.com/uploads/1/3/2/3/132303353/5213518.pdfIn PDF document text
    • https://site-1036851.mozfiles.com/files/1036851/sasiz.pdfIn PDF document text
    • https://site-1039698.mozfiles.com/files/1039698/mojoseliwisej.pdfIn PDF document text
    • https://site-1043660.mozfiles.com/files/1043660/wirotarasixogovosupopo.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/fubopov.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/lifanesonorijemotapu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 4964 bytes
SHA-256: 913fa4c3e6684cf171540e72c17c4b1e9c6112852d4e3709931a826051062eca
font_01_sfnt_off000083eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 9956 bytes
SHA-256: afa2ad4cc8ee4807f7ee163b3693012ef47ebc77eb89d6861d8727216d0822b3

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