Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eba09219103c4f3…

MALICIOUS

PDF

77.5 KB Created: 2021-05-08 10:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5f24e2e8ac37ab869e17db8c6bc4dbfe SHA-1: 5a168fb16bd3234cd26a7b7378b2d7ae224ea88a SHA-256: 5eba09219103c4f3ca990705e94006d58272e0a510fc38e433400d84112c6af4
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 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.
  • 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://bologen.ru/strik?utm_term=sherlock+holmes+6-book+boxed+set PDF link annotation
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/3961658.pdfIn PDF document text
    • https://nizawubanivud.weebly.com/uploads/1/3/4/5/134529200/23de23f7a4560ad.pdfIn PDF document text
    • https://cdn.sqhk.co/budijapa/egiMVQh/nametiwoserodujinupofem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_604e7a09e904c.pdfIn PDF document text
    • https://zujamabosav.weebly.com/uploads/1/3/4/3/134363941/1658642.pdfIn PDF document text
    • https://cdn.sqhk.co/retepisej/ijh3fgg/mxr_10_band_eq_frequencies.pdfIn PDF document text
    • https://zezonusadife.weebly.com/uploads/1/3/1/4/131410479/deguvotesebawizuxulu.pdfIn PDF document text
    • https://radigaligoled.weebly.com/uploads/1/3/4/3/134333621/wavujojowokujo.pdfIn PDF document text
    • https://pexevirojaloko.weebly.com/uploads/1/3/4/8/134882405/loxemezorej.pdfIn PDF document text
    • https://xadifera.weebly.com/uploads/1/3/1/4/131438156/3e8ac5447617f.pdfIn PDF document text
    • https://cdn.sqhk.co/dixufeja/tiggcib/animal_restaurant_takeout_recipes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422884/normal_6049a8835ea23.pdfIn PDF document text
    • https://munowimil.weebly.com/uploads/1/3/1/4/131406650/1159197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_605af1b521300.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/jgdkgfx/mythic_eternal_palace_guide.pdfIn PDF document text
    • https://telonilinip.weebly.com/uploads/1/3/6/0/136050587/b165789e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446152/normal_601febe19f2a3.pdfIn PDF document text
    • https://cdn.sqhk.co/mepowokugo/jcAl8gi/walmart_money_card_activation_phone_number.pdfIn PDF document text
    • https://kirorasonosa.weebly.com/uploads/1/3/4/7/134743937/ketowug_jaloliwuzi_zamawa_rudakevizeji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gixawetopoli/que_es_un_liderazgo_organizacional.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/boingo_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/89141986340.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/visumopefofojo.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/bitdefender_antivirus_android_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/solonavonifubifubijufinav.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/5042493475.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE214 5164 bytes
SHA-256: 37d507513058e3b5f4e98bfc5d3b2ee67cc1ca5d9d5c1f076a884cc7b2a93f3e
font_01_sfnt_off0000f3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A6 11300 bytes
SHA-256: 7307f71e501d95bfc079496222787cf7ba897d448c5573575d167907b92885b4
font_02_sfnt_off000119c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C8 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230