Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bfb100f1727fba…

MALICIOUS

PDF

75.4 KB Created: 2021-03-31 07:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18e16fed90faa1580493982f92684597 SHA-1: d5ad26c6a7cd50f305d4ada88fae01934b8d7b6f SHA-256: 30bfb100f1727fba0da4211a015020e926034c0f87973737b60cb8c42f6ee05c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one pointing to 'https://s3.amazonaws.com/gazitif/nipixoxato.pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://xezojetit.ru/wix?keyword=koopa+paratroopa+coloring+pages
    • http://kidobujugi.mypressonline.com/balanopostitis_tratamiento_adultos.pdf
    • https://miwunogix.weebly.com/uploads/1/3/2/8/132814940/jodejut-rilur.pdf
    • http://fusizexa.22web.org/abnormal_gait_patterns.pdf
    • https://static.s123-cdn-static.com/uploads/4427105/normal_5ff7cb18f1863.pdf
    • https://pidujalibogi.weebly.com/uploads/1/3/1/3/131380128/8435335.pdf
    • https://static.s123-cdn-static.com/uploads/4379606/normal_5ff5c40401e4c.pdf
    • http://rudovatimokasum.medianewsonline.com/fotovolovo.pdf
    • https://dojexivosofu.weebly.com/uploads/1/3/4/3/134348646/sivifelo-jaminifug-dipebako.pdf
    • http://biwiroxefamir.mywebcommunity.org/82611401477.pdf
    • https://wemogejivaje.weebly.com/uploads/1/3/1/0/131070934/diwagurapejo-mirotora.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gazitif/nipixoxato.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/reduction_of_quadratic_to_canonical_form.pdf
    • https://s3.amazonaws.com/nedijowewoded/convertir_un_a_word_en_linea.pdf
    • http://lugotimasowe.epizy.com/bee_bot_lessons.pdf
    • https://s3.amazonaws.com/wiremeresegikon/gemun.pdf
    • https://s3.amazonaws.com/fatikonavori/88405103199.pdf
    • http://feferabi.atwebpages.com/ropavamajuxuzofavegigemob.pdf
    • http://velirixegu.rf.gd/vovotisitak.pdf
    • http://zasuwunal.myartsonline.com/an_introduction_to_accounting_and_financial_management.pdf
    • http://tirosonitagaxe.rf.gd/60428613660.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec92.bin
df3aed07ba89b57d0e9d94856ed9f1e182ca5b5ecfa1ef9fca5b2a21742c030f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC92 5068 bytes
font_01_sfnt_off0000fde3.bin
16b0673aea627dd29bb1de97f583153a3e453fdcbcf0e2a42adba1badd192fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE3 9904 bytes

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