Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0fa4fcce76664d…

MALICIOUS

PDF

67.2 KB Created: 2020-07-11 01:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 8d600c945ada35b6214ef63bbbefd5fd SHA-1: 89190a7cedf4bdaa3350d06d00ef3a8bc0d0f60d SHA-256: cc0fa4fcce76664dd715efedbfdb9e3c50bf6286ba853b9b2dc3f4752886f9b9
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=water+pollution+pdf+project'. This suggests the document is part of a campaign to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=water+pollution+pdf+project In PDF document text
    • http://files.thegirlsfromguantanamo.com/uploads/1/3/1/4/131453985/cc665e6f5d8186.pdfIn PDF document text
    • http://files.krystalsolutions.com/uploads/1/3/0/8/130873848/87e9d940f140f.pdfIn PDF document text
    • http://files.thelivingroomprojects.com/uploads/1/3/0/9/130969775/8ae3b6.pdfIn PDF document text
    • http://files.citybeerfest.org/uploads/1/3/0/7/130776639/5b50a69444.pdfIn PDF document text
    • http://files.919tvrepair.com/uploads/1/3/0/7/130775520/48d1885aae83.pdfIn PDF document text
    • http://files.firstclasssuccess.com/uploads/1/3/1/1/131163640/gudenefujigo.pdfIn PDF document text
    • http://files.dthomastraining.com/uploads/1/3/1/4/131437531/c8a4559afe83.pdfIn PDF document text
    • http://files.katedickersonart.com/uploads/1/3/1/0/131071289/8458070.pdfIn PDF document text
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131452732/sodopafesub.pdfIn PDF document text
    • http://files.rawseries.org/uploads/1/3/1/4/131407010/7003532.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jaminuxaru.files.wordpress.com/2020/07/gololixowawalula.pdfIn PDF document text
    • https://xosuvenivon.files.wordpress.com/2020/07/xugidolimurasena.pdfIn PDF document text
    • https://bopawilab.files.wordpress.com/2020/07/7390328588.pdfIn PDF document text
    • https://sebogoveb.files.wordpress.com/2020/06/7478818245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/zesib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/tajupulotenobojejetasog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58829080427.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB5 4940 bytes
SHA-256: 645e28e17814be3053b8c2a39becdef2aaabd44b42fd0f5afdf853e9a62c8e65
font_01_sfnt_off0000db9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9B 10564 bytes
SHA-256: 6a2050280f924b56887e995df949749f30f1c2db7fe718e13cccf402ccb47203

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