Malicious PDF — malware analysis report

Static analysis result for SHA-256 19320a232627c137…

MALICIOUS

PDF

73.6 KB Created: 2021-01-19 05:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: dacad4618c563064907c7fa546d24107 SHA-1: 99e934fd52d0d9fb55b0274f8a34ac779586145b SHA-256: 19320a232627c1377221b05947936fc1f125ac37273920dd9aec5e2f7bf6b1a0
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate the PDF is designed as a link farm on disposable hosting, likely to obscure the final malicious destination. While no scripts were explicitly extracted, the nature of the embedded links and the ML classifier's high confidence suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=kenshi+faction+relations+cheat In PDF document text
    • https://site-1166597.mozfiles.com/files/1166597/37025724644.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/ibDWE6w/space_drawing_perspective_dongho.pdfIn PDF document text
    • http://dudipoviju.22web.org/gawibulijorovubanopib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5fd8e45756281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404757/normal_5fadfc349a766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_5f986e4292a1f.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/jhlgchb/ninja_blender_cups_with_blade.pdfIn PDF document text
    • https://site-1171554.mozfiles.com/files/1171554/agar__io_free_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/gh9euii/80313993642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fc1e76c2630c.pdfIn PDF document text
    • https://site-1244934.mozfiles.com/files/1244934/51801590494.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/nes_snes_emulator_windows_10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412775/normal_600350b5a734a.pdfIn PDF document text
    • http://kidepokapila.22web.org/noluvekikonunata.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/jhH3Hif/13665583749.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/jiaijy4/8025097230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403819/normal_60062ab873157.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jidodurej.epizy.com/87378883925.pdfIn PDF document text
    • http://vutaxinasiva.epizy.com/antivirus_apk_android.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95A 4936 bytes
SHA-256: 57578c8e0815d45f28b175da09cb20d6d410ba039197936e768f397eeefda583
font_01_sfnt_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000f2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AA 10672 bytes
SHA-256: 23fd9e8d149cb7e8e435a8958d2dd192eff0f63d1dcf44fb961d141c7b73f81b

Open this report in the interactive analyzer, or submit your own file for analysis.