Malicious PDF — malware analysis report

Static analysis result for SHA-256 63929549873b5a6c…

MALICIOUS

PDF

78.8 KB Created: 2021-03-22 06:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d69d3430928a56441eb1c33e42694cf6 SHA-1: ccc0f51fb38c34a0b756825883aab8b63afe35cf SHA-256: 63929549873b5a6c5d2280d8348fe7d5a6783ecfd41b685759d99bfc0f0b9d2b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing operation. The embedded URLs, such as 'https://lozipotod.ru/123?utm_term=brother+in+arms+apk+free', are likely used to redirect users to sites hosting malware or phishing content.

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 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://lozipotod.ru/123?utm_term=brother+in+arms+apk+free PDF link annotation
    • https://cdn.sqhk.co/mojafefegamo/cNjkJD3/mixatowaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/jenotefi/gibwgcA/nebobede.pdfIn PDF document text
    • https://zudejuzire.weebly.com/uploads/1/3/2/6/132681250/jafibuna-gerad-pakawu.pdfIn PDF document text
    • https://nipoxumafoji.weebly.com/uploads/1/3/4/7/134717148/dapat.pdfIn PDF document text
    • https://foboxujegi.weebly.com/uploads/1/3/4/6/134694162/424270.pdfIn PDF document text
    • http://kieverts.xyz/woxaruwawj4inx.pdfIn PDF document text
    • https://cdn.sqhk.co/kixeworu/dz3ijhi/kiwimedipokepasalobobo.pdfIn PDF document text
    • https://sujumakatu.weebly.com/uploads/1/3/1/3/131379709/sarig.pdfIn PDF document text
    • https://sinuvuliwazima.weebly.com/uploads/1/3/1/8/131871572/suvuxumopowem_giwazebe.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/hjigigL/xurolebuwimo.pdfIn PDF document text
    • http://repochka.site/767505933001wcae.pdfIn PDF document text
    • https://cdn.sqhk.co/vozofugova/hd3hbhc/free_tv_shows_and_movies_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xidazeze/99021313150.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/what_are_the_characteristics_of_a_new_life_church.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/45521746483.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/gabax.pdfIn PDF document text
    • https://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_3a112cdeae9449bdb6c771d0a4d9ca31.pdf?index=trueIn PDF document text
    • https://3ea853e4-7f2b-4fb0-9229-b04907a1e321.filesusr.com/ugd/d94095_12d4ab40d35844079d348fa57da860de.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/16700005787.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/double_bed_sheets_set.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ead2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD2 5224 bytes
SHA-256: bd0266beb4202b0a8e2ebe444f7d9797c829510ca4997f58f165164dcc7b3f90
font_01_sfnt_off0000fc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6C 21936 bytes
SHA-256: 1e60ce6aa4f7a1fa781ba5dca82a7afeb436c7dc1bb338c92409f5312fc034c3

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