Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ac265eab599d4b…

MALICIOUS

PDF

78.6 KB Created: 2021-02-21 05:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4953d416224b08ec638587dc1b6ed327 SHA-1: 5bba1e5ca8d9eb9af5ba2fbc8f528bb3cbc4ee91 SHA-256: c2ac265eab599d4be1d37167e727375da1654596a533d9710306e9a93b722b50
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, directing users to external resources. One critical heuristic indicates a link to known malicious redirector infrastructure, and ClamAV detected the file as a phishing trojan. The presence of numerous PDF links suggests an attempt to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=hebrew+new+testament+interlinear+online In PDF document text
    • https://dolilufaxeni.weebly.com/uploads/1/3/2/6/132683246/dd5ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404308/normal_60168a582ba90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_601481b4d4aa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413713/normal_5fc76fed61e61.pdfIn PDF document text
    • https://fusofajo.weebly.com/uploads/1/3/1/4/131438110/jijevifozano.pdfIn PDF document text
    • https://wunabigoji.weebly.com/uploads/1/3/4/8/134891590/xesixelami_mukijaxakanul_tifilevugaj.pdfIn PDF document text
    • https://feposejixadolo.weebly.com/uploads/1/3/4/7/134744373/a4d709d10de54.pdfIn PDF document text
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/rofobel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418970/normal_5fdbdf36ac77b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425921/normal_602305d9d8cad.pdfIn PDF document text
    • http://kuxufijum.iblogger.org/template_powerpoint_animasi_keren.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sanebofav.epizy.com/86949216142.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/pomifiradofajavuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/hangout_dialer_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/kovelajefavevebigufimu.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/64639418274.pdfIn PDF document text
    • http://fufajapikimideb.epizy.com/tramontina_pressure_cooker_parts.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_off0000ef92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF92 5024 bytes
SHA-256: aa13450a75c96f24739001e4d65268cbc48c6be2cdb1dfbad7717d2bd97d454a
font_01_sfnt_off00010099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10099 13736 bytes
SHA-256: 7605f07f50f2ec7f232831d94fc8d560339113398c42362cb1419232918936e9

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