Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eade6eadefeca17…

MALICIOUS

PDF

73.4 KB Created: 2020-12-20 10:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b17f679fd31d7d38b39915287a6b58f2 SHA-1: 0875be08072eac67a5cc288038382f92c5eebfbf SHA-256: 9eade6eadefeca1782eb4c89de138aaaf70ab67ef32293038927a4117056fbef
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a redirector link and a link farm. The embedded URLs, such as 'https://traffmen.ru/aws?utm_term=emergency+battery+charger+app', suggest a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffmen.ru/aws?utm_term=emergency+battery+charger+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5fbb112e49fe3.pdfIn PDF document text
    • https://judunelikirolo.weebly.com/uploads/1/3/4/3/134375477/8d051d66dc.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/5925373.pdfIn PDF document text
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/minelobelidoxosafo.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://uploads.strikinglycdn.com/files/280ffcbc-ed15-4ad4-9b46-6855f3365ab3/yanmar_1610d_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e96fb1a8-1bd0-4ae4-8fb7-5e028c3c7841/tuzegozunamidapukaxuki.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/binajawubirej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5754c1-7d62-4a5f-a1e3-9a80e4102e72/losimekobaresurul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e51d9b-fbf0-4b58-bd51-f0fffdce1378/dr_spocks_baby_and_child_care_10th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a064b52-86bc-44ec-b666-1a506d78965a/head_shoulders_knees_and_toes_lesson_plan.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_off0000d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD888 4964 bytes
SHA-256: 1aaeb44b1bf0b276da43cdd2ebf943e25f77695919611d024c46bd11128dbcc5
font_01_sfnt_off0000e931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE931 9984 bytes
SHA-256: 6393a568ff93f1b99b69fb945131dfdb50fb730d73a2099b9e38a365d31f1bc1
font_02_sfnt_off00010b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B34 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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