Malicious PDF — malware analysis report

Static analysis result for SHA-256 a404c77e27487391…

MALICIOUS

PDF

72.4 KB Created: 2021-06-05 20:35:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 30514a076e1b1d3edfe2d9aa7743d26f SHA-1: 40c522b414e384b0936d8e64a766a174b5e0f8b7 SHA-256: a404c77e27487391b7bd3c2659f5593c4aff6bb6b253a9a6565be138e9e2d206
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to drive traffic to malicious sites. The primary lure is a promise of a game hack, which is a common phishing tactic. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://drafthe.ru/pbw?utm_term=pixel+gun+3d+hack+no+survey+no+download+no+human+verification PDF link annotation
    • https://rigozogukex.weebly.com/uploads/1/3/3/9/133986215/zubutu_vojazomufot.pdfIn PDF document text
    • https://lasajazog.weebly.com/uploads/1/3/4/8/134885140/494fd450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458407/normal_601832d2d9c02.pdfIn PDF document text
    • https://wedarudojov.weebly.com/uploads/1/3/4/0/134012757/55fd7f95dc6de2f.pdfIn PDF document text
    • https://badazunezibak.weebly.com/uploads/1/3/5/3/135338398/ninixenafilavi.pdfIn PDF document text
    • https://gawajofanobovap.weebly.com/uploads/1/3/5/2/135296378/sitaz.pdfIn PDF document text
    • https://mikigelovipu.weebly.com/uploads/1/3/4/3/134387596/silugepunimipu.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/7737987.pdfIn PDF document text
    • https://zinivopupo.weebly.com/uploads/1/3/4/3/134386920/fd073e73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387699/normal_5ff17eae195c9.pdfIn PDF document text
    • https://betetudiju.weebly.com/uploads/1/3/5/3/135348010/c27705c45bfe4f.pdfIn PDF document text
    • https://gapibuxox.weebly.com/uploads/1/3/2/6/132695643/4107032.pdfIn PDF document text
    • https://momaramurelu.weebly.com/uploads/1/3/4/3/134309976/fisovamali.pdfIn PDF document text
    • https://foxakiletomuxo.weebly.com/uploads/1/3/4/0/134012751/fetulotapisix_zipipebopiwaw_fivid.pdfIn PDF document text
    • https://labadejasif.weebly.com/uploads/1/3/4/7/134718281/fubipepel-jezibifu.pdfIn PDF document text
    • https://fisezofibidan.weebly.com/uploads/1/3/4/3/134316577/9420541.pdfIn PDF document text
    • https://xojenupikubola.weebly.com/uploads/1/3/4/7/134747345/9803296.pdfIn PDF document text
    • https://tiritezolodimim.weebly.com/uploads/1/3/4/7/134743729/wotijoxo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b457f72d-7f09-41f3-a018-26ec5f6b20d3/62357478050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758197c2-f330-4168-ae8d-6fb72e435765/how_to_use_a_singer_embroidery_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b66959-d996-48d5-99df-362a00a540ac/vajakumimojefivoronasiput.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86194ccc-60b9-4142-a1ce-4f7edb153f96/vinadipokugagijafavez.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 5988 bytes
SHA-256: 9e0b1f168581a2e7028dfc568df24c26f40488d2e08c8d655002036afea8333d
font_01_sfnt_off0000f0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 10216 bytes
SHA-256: 4a3b54015051fa8eec36746f0bbb7c2fda181fe4eac56c4ceaa2058e6fba2f77