Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d449b9fd8476aae…

MALICIOUS

PDF

72.2 KB Created: 2021-02-13 18:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 47bd4e3f56fb40e7feb641733f5f3184 SHA-1: fa559373db2234abe981aedcf94e7c5a23338aa8 SHA-256: 4d449b9fd8476aae7b894e87a0bc2480680853e6a1db2fb8829d54ce1c51b3c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=haier+wine+cooler+12+bottle PDF link annotation
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/6716201.pdfIn PDF document text
    • https://nezogifoxo.weebly.com/uploads/1/3/1/6/131637357/rifijosolitafajabefu.pdfIn PDF document text
    • https://pikarazumubujon.weebly.com/uploads/1/3/1/4/131452816/f5dd5.pdfIn PDF document text
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/kufuviz.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/8c00a98d948840.pdfIn PDF document text
    • https://wigawiwamenusum.weebly.com/uploads/1/3/5/3/135323889/bamunapukeg.pdfIn PDF document text
    • http://mastericy-chistoty.ru/lukefarojiki1rkap.pdfIn PDF document text
    • http://lulumel.66ghz.com/11186976117.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
    • http://zexodelovakeg.rf.gd/xarisigaruturidazow.pdfIn PDF document text
    • http://nidemavaguwagev.rf.gd/diamond_platnumz_african_beauty_lyrics_video.pdfIn PDF document text
    • http://kejufunekopal.epizy.com/chloroform_function_in_dna_extraction.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/8453678988.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/tazefaxamifazafove.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/l1_blanket_visa_interview_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 4780 bytes
SHA-256: 386cd4a363211c75a2ddd9caae27a97438b317db9a8547e18fa0926c3d428bbb
font_01_sfnt_off0000e302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE302 10332 bytes
SHA-256: 3c3a059543507dec81932364ae32f90211b90f347c1a38ff8fb6d0d7062a03aa
font_02_sfnt_off0001064d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176