Malicious PDF — malware analysis report

Static analysis result for SHA-256 013d0ab60aa610f5…

MALICIOUS

PDF

86.7 KB Created: 2021-02-26 07:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e6007d472edf2e6cb09c6219f269661d SHA-1: 2c42baa1a0888e860eb531e11a9f2cd933ad4d59 SHA-256: 013d0ab60aa610f5fbcc826e3504ee03fd7017b1f5fe97e769652cb2335863d7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to "Game of thrones graphic novel box set", likely intended to trick users into visiting the malicious sites.

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
  • 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://jottigo.ru/award?keyword=game+of+thrones+graphic+novel+box+set PDF link annotation
    • https://pisukobuvasojab.weebly.com/uploads/1/3/4/3/134398412/foforigal.pdfIn PDF document text
    • https://cdn.sqhk.co/lasanamemego/Dhcdm7k/iphone_11_full_hd_wallpaper_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380382/normal_602b0b8e8d13e.pdfIn PDF document text
    • https://forupiwiwipugo.weebly.com/uploads/1/3/5/3/135349306/niguroreg.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/tizulavosenutakakiburekam.pdfIn PDF document text
    • https://cdn.sqhk.co/milevatomog/pFzifdM/detective_baldy_ad.pdfIn PDF document text
    • https://sozaruterir.weebly.com/uploads/1/3/0/7/130738534/vumemi-xadulesexazife.pdfIn PDF document text
    • https://cdn.sqhk.co/zujijivopuju/Ajcjhid/discount_code_for_groupon_new_customers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390374/normal_60075af21a78d.pdfIn PDF document text
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/2481657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476436/normal_5ff7708c5b7fd.pdfIn PDF document text
    • http://fastpysystem.online/togu_challenge_disc_2._04h8r3.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/povugow_rixoguxuwipomo_xijejo_guxeneba.pdfIn PDF document text
    • https://cdn.sqhk.co/rezejigobip/WswkLji/amiibo_mario_kart_8_cemu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453100/normal_5ff7cc590af71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5fe3f45334c2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xavisijividefo.epizy.com/falimejun.pdfIn PDF document text
    • http://tumevadokopeki.rf.gd/fezisazulasonuku.pdfIn PDF document text
    • http://lijukogibedatu.epizy.com/prevalence_of_gestational_diabetes_mellitus.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_off000115f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115F9 5728 bytes
SHA-256: a5b5b0d24e099d90e495987c07964401da8e2ab32d7e31927b3dd55ce9136838
font_01_sfnt_off0001295b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1295B 10508 bytes
SHA-256: ebbbc24c6524926e78a575cae7dcadefe2d24c6253f3e99fb9cb5e59840993fd

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