Malicious PDF — malware analysis report

Static analysis result for SHA-256 57264b0454316edc…

MALICIOUS

PDF

74.3 KB Created: 2020-12-27 07:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 05181dc23d24cc2813d1b7f1aeda49b2 SHA-1: ee26386ed62775cab1d6b06c89a69e1eca441df9 SHA-256: 57264b0454316edc08ff9a1282d9a868a96cd1018e115f158c784820070cf7bd
214 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malicious redirector campaign. It contains a large number of external links, with one specifically identified as pointing to known malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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
  • 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://traffmen.ru/aws?utm_term=how+is+atp+formed+in+aerobic+respiration In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/zanadutut_wexudafenatogun_jetomefoja.pdfIn PDF document text
    • https://jizidetaji.weebly.com/uploads/1/3/4/6/134626841/391e9b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482629/normal_5fae3ed1c52ea.pdfIn PDF document text
    • https://domamulobam.weebly.com/uploads/1/3/4/5/134527142/a46ecd84678.pdfIn PDF document text
    • https://wuginimujewege.weebly.com/uploads/1/3/4/7/134714977/42adea05e178.pdfIn PDF document text
    • https://zogininofifus.weebly.com/uploads/1/3/2/6/132695288/todanafirodar-fuwaxapi.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/vidadaviwal/house_rental_contract_template_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/nipikalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7528af7b-8ae6-4d6f-8896-afd53fedece8/amc_12_2020_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/4pics1word_911_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/albacore_tuna_fishing_report_california.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/sokijatav.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/video_editing_android_full_apk.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_off0000e38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38A 5464 bytes
SHA-256: ef1e3f634d5eeb6235bd373c73e20bb57928121c153e343e4560805b19753abb
font_01_sfnt_off0000f612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF612 11172 bytes
SHA-256: fc693cc77158236da1cdf903e5636b4b23a0bbe74586bd2513afe9f95de63fd1

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