Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ae5b50608caca4…

MALICIOUS

PDF

64.7 KB Created: 2021-01-08 10:16:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ba84cb557ca2f64f44455bbdd5295042 SHA-1: 071c4396d6f9803644fd849cd47e42be782ce99f SHA-256: d6ae5b50608caca401d456927e88dd6e7fd01bfbb3490541bec87aabdc7fbd7c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?utm_term=new+car+background+hd PDF link annotation
    • https://vixagudidiw.weebly.com/uploads/1/3/0/7/130775505/rapexafu_zenibixi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370540/normal_5fceaaac895bd.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/4THmqJD/bulleit_blenders_select_mash_bill.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_5fa6f61f433a7.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/getizar/free_wedding_shower_invitation_templates_for_word.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/division_worksheets_grade_4_math_aids.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/derrick_rose_news_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/24521702589.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/amnesia_horror_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb03d28-3b32-4cb0-be9e-77fdfa32f389/80785541333.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/bully_geography_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e858ac-646f-4e67-86f8-d3cae54bb8f8/safixesajurarepowikimixim.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/tizupefidodezojig.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_off0000c049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC049 5256 bytes
SHA-256: 225c5f15b6d49230a2288564a0566024400e536b8baac8da922ab4f81e9e2db0
font_01_sfnt_off0000d23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23B 10512 bytes
SHA-256: b884dd7ba145b890c3127314abb53b792bb22630e95dfdd59f56fb846b28a5f6

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