Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c4634c263728b3…

MALICIOUS

PDF

74.5 KB Created: 2021-01-18 12:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5e926b0404bd3feba65c80cf1d567940 SHA-1: 771fea11d47c9e4145269af865ff20e8ce155795 SHA-256: d0c4634c263728b31b397e89546bcc96ce460293651a747f1743c58a51ca6f97
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, directing users to various external PDF files hosted on services like Weebly and S3. One of the primary links points to known malicious redirector infrastructure. This suggests the document is designed to funnel users through potentially malicious sites, likely for phishing or malware distribution.

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://traffking.ru/123?utm_term=white+alaskan+husky+with+blue+eyes+for+sale In PDF document text
    • https://mubazujozij.weebly.com/uploads/1/3/4/7/134705676/vufebilixojojov-fexuna.pdfIn PDF document text
    • https://wubeponasi.weebly.com/uploads/1/3/1/6/131606197/1533002.pdfIn PDF document text
    • https://ginuwawabesinu.weebly.com/uploads/1/3/1/1/131164414/e4fd1fbb909.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/riwumuraji.pdfIn PDF document text
    • https://cdn.sqhk.co/megodiwe/gj0vghZ/among_us_hack_mod_apk_ios.pdfIn PDF document text
    • https://naxibozagut.weebly.com/uploads/1/3/4/5/134580084/94e044.pdfIn PDF document text
    • https://kixuvatapowow.weebly.com/uploads/1/3/1/3/131383305/722fc7.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/d1CrDjg/example_of_the_word_saudade_in_a_sentence.pdfIn PDF document text
    • https://rofexelugikovu.weebly.com/uploads/1/3/4/7/134732340/fisedexumotid_fasul_zatuwidurejimi.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/jagiba-sojeba-bikevuli-kimugot.pdfIn PDF document text
    • https://lufugidot.weebly.com/uploads/1/3/4/8/134848642/totekab.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/lijulijowivaze/have_to_exercises_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/zelas.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/dahisar_weather_report_today.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/19319529473.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_off0000da36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA36 5148 bytes
SHA-256: d54d298b107e3212c7b66f0a065dc9312e1739a9cbea5472ffeb779ce1b7291e
font_01_sfnt_off0000ebc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC0 10376 bytes
SHA-256: 649bcfe285fc36182c3db31132a8b6f7566ebc3a0abe8b9d033ee38e0c12261c
font_02_sfnt_off00010ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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