Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1545bf7d3423afb…

MALICIOUS

PDF

67.0 KB Created: 2020-11-18 13:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e0714dc8b8116b82c7fafadec1a44cbc SHA-1: 34376fbb363c5bb0bdc91cf0b922d98524a7319d SHA-256: b1545bf7d3423afb9e5ab5989b7f1db03e7f1b964b17931493d943dfa5639162
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with critical heuristics identifying it as a malicious redirector and part of a link farm. The presence of links to domains like 'traffine.ru' and numerous 'weebly.com' subdomains suggests an attempt to drive traffic to malicious or compromised sites. While no scripts were explicitly extracted, the nature of the embedded links and the ClamAV detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffine.ru/aws?utm_term=asurion+affidavit+cricket+pdf In PDF document text
    • https://zukedobawalot.weebly.com/uploads/1/3/4/5/134526307/3104e74.pdfIn PDF document text
    • https://xezujexowesujol.weebly.com/uploads/1/3/4/5/134502134/depukugemaxid.pdfIn PDF document text
    • https://jozudepixivi.weebly.com/uploads/1/3/4/6/134682498/molijevibuz-vupadami-mosejedogifapal-dapamosegene.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/a23b2.pdfIn PDF document text
    • https://rogusedi.weebly.com/uploads/1/3/4/4/134433103/b89323e.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
    • https://s3.amazonaws.com/zirojopemup/91146971639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81c81213-90f6-42f8-958b-841a31ceea7c/tapalufokivomu.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/11398088952.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/definition_of_verb_to_be_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa6a1a0-ed97-4907-8544-25a23c426da3/showbox_mod_apk_download_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/fruits_basket_2019_kisa.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_off0000bc56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC56 5112 bytes
SHA-256: 8129e0cb95f958d1f484eb0d5f3efffb8519c9221fbde3436cbb91df603becb8
font_01_sfnt_off0000cdca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCA 10412 bytes
SHA-256: 972465e6d99dfdf46d21ee9c8655180c2f85e27ea61d0e1f229a1f6f19166deb
font_02_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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