Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7c770639a41414…

MALICIOUS

PDF

67.1 KB Created: 2021-01-25 03:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 341b0887b2abb6918ac46421dedf5031 SHA-1: 6c65ed1694d96f2cfb665d23c53f937be8cd4919 SHA-256: 1e7c770639a41414872a2a4b33d583079a5ba5ce94cd45e2757cee0eb6c7fcd9
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm or phishing lure. The presence of external URIs and the overall structure point towards an attempt 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://trafficel.ru/123?utm_term=deep+pocket+flannel+sheets+amazon PDF link annotation
    • https://nakaporona.weebly.com/uploads/1/3/1/4/131438848/musanegenufekefodore.pdfIn PDF document text
    • https://fuxexuwamonem.weebly.com/uploads/1/3/5/3/135387882/gatisexovawejol.pdfIn PDF document text
    • http://summerita.fun/minecraft_pocket_edition_v1._9._0._15_apkm44lx.pdfIn PDF document text
    • http://mabay.fun/revheadz_engine_sounds_apk_fulli1tpv.pdfIn PDF document text
    • http://form-copyrightservices.com/zatatesakenebgli6.pdfIn PDF document text
    • https://vilinumatilaji.weebly.com/uploads/1/3/2/7/132740241/5348953.pdfIn PDF document text
    • https://sumomaduge.weebly.com/uploads/1/3/4/8/134884200/sotixojugodike.pdfIn PDF document text
    • https://rejovofutilux.weebly.com/uploads/1/3/1/4/131484728/8271322.pdfIn PDF document text
    • https://dufadijikog.weebly.com/uploads/1/3/5/3/135325035/8338051.pdfIn PDF document text
    • http://cpskras.website/853912044682shjm.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/jQIhiYk/field_hockey_goalkeeper_training.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472793/normal_5ff712a6e6213.pdfIn PDF document text
    • http://badge-verification-center.com/easy_sugar_free_birthday_cake_recipesloens.pdfIn PDF document text
    • https://cdn.sqhk.co/naveropifo/gg5hfic/kamesakufudofes.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/gfjifhi/super_smash_bros_clash_rom_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/ygjhgib/19890845990.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojobawezelo.rf.gd/enteral_feeding_guidelines_australia.pdfIn PDF document text
    • http://dinixebun.epizy.com/bsnl_haryana_plan.pdfIn PDF document text
    • http://ziwejozaz.epizy.com/nunuwi.pdfIn PDF document text
    • http://validexa.epizy.com/navexudosarofimes.pdfIn PDF document text
    • http://kagabefusexem.epizy.com/marketing_research_examination_questions_and_answers.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_off0000c927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC927 5272 bytes
SHA-256: 42fd5a3c23fc346f00a8405e4c18915ac86a41faf45e0ed44eec4cbb879c4697
font_01_sfnt_off0000db08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB08 10000 bytes
SHA-256: 17f9dc4c0a1434ff77304ac60229bdb93f907ad267c1c021d96b706b900daec5

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