Malicious PDF — malware analysis report

Static analysis result for SHA-256 52503c0218e16599…

MALICIOUS

PDF

84.7 KB Created: 2021-03-19 12:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da904306235b0f6091c7bb1064e6ecb3 SHA-1: adfc957b8bc92e2fbd2bd4c9a818be3e82dfd0b8 SHA-256: 52503c0218e16599c7e1111a6a547c11bfcd7f9858b2b76d345f46485ee2b6ac
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'Ar 15 lower assembly midwayusa', suggesting a lure to a malicious URL. The embedded URL 'https://seumenha.ru/strik?utm_term=ar+15+lower+assembly+midwayusa' is the primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=ar+15+lower+assembly+midwayusa
    • https://cdn-cms.f-static.net/uploads/4417988/normal_6030462c3112a.pdf
    • https://cdn-cms.f-static.net/uploads/4419637/normal_600e4bee96aaa.pdf
    • http://sneakerspapa.store/what_is_the_media_dependency_theoryins28.pdf
    • http://ttttrrrr.space/black_guys_haircut_styleswmt0z.pdf
    • https://cdn-cms.f-static.net/uploads/4450907/normal_602b63d131359.pdf
    • http://nebofonuve.mywebcommunity.org/wajizujogavuwefur.pdf
    • http://topcreditmonitoring.info/436366313688cza3.pdf
    • http://sutezesibopixiv.medianewsonline.com/6680118007.pdf
    • https://cdn-cms.f-static.net/uploads/4416304/normal_602f16b99ac69.pdf
    • https://cdn-cms.f-static.net/uploads/4478926/normal_6015b73bc13f0.pdf
    • http://online-bestshop.xyz/kerewakowavibozuwi6qgpx.pdf
    • https://static.s123-cdn-static.com/uploads/4486356/normal_60008af4ae690.pdf
    • http://majikok.mygamesonline.org/kirby_heritage_84_vacuum_bags.pdf
    • https://cdn-cms.f-static.net/uploads/4383300/normal_603055205feaf.pdf
    • https://static.s123-cdn-static.com/uploads/4371786/normal_5ff6585f6c5f6.pdf
    • http://bokaxakoz.sportsontheweb.net/rapawop.pdf
    • https://cdn-cms.f-static.net/uploads/4476418/normal_602995fd13245.pdf
    • https://cdn-cms.f-static.net/uploads/4446915/normal_60176d23270fa.pdf
    • http://arthromedro.xyz/speed_rope_exercise_benefitsgt6fi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f6694b5f-0dd6-4125-88fd-15932a4ba12a/jorupezeruxagisuwo.pdf
    • https://uploads.strikinglycdn.com/files/65531675-0022-4c3d-9b00-25e9e0b2fbd6/why_is_my_amana_washer_not_spinning.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010014.bin
f8f7d69eb041bb709d01ea7a67d6a981ad0baca594a72e170024e264c9ef1d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10014 5168 bytes
font_01_sfnt_off000111b9.bin
6ae2a8f5bea661a7f4c6f64787d63710e7930200ad9f4f1512e6fcaa890b0b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111B9 10872 bytes
font_02_sfnt_off0001370f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1370F 4324 bytes

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