Malicious PDF — malware analysis report

Static analysis result for SHA-256 2725af98f3a51c68…

MALICIOUS

PDF

84.3 KB Created: 2021-05-21 05:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4b968c9d1fe754ed041d7a632b67d32c SHA-1: 20e4061673dfeccd998204b5efa8b45d5d617d0a SHA-256: 2725af98f3a51c689485a59db41f71e1dd5619968ef15dd3701a62c45b7eab5d
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on S3 buckets and appear to be part of a link farm designed to improve SEO for specific search terms. One prominent URL, 'https://zajinet.ru/strik?utm_term=death+race+2008+full+movie+download+in+hindi+filmyzilla', suggests a lure for pirated movie content. ClamAV detection and ML classification indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/strik?utm_term=death+race+2008+full+movie+download+in+hindi+filmyzilla PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459059/normal_5fe3d849aff1d.pdfIn PDF document text
    • https://wuwawumakilur.weebly.com/uploads/1/3/4/8/134875279/xerewixexipufemufot.pdfIn PDF document text
    • https://jofanota.weebly.com/uploads/1/3/2/3/132302765/wiwoganonanuw-sutuxepipezuf.pdfIn PDF document text
    • https://dutofubexel.weebly.com/uploads/1/3/4/6/134631161/4b2e59ab200384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5fdefdd9990c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_601d175b5555c.pdfIn PDF document text
    • https://jikuvubavul.weebly.com/uploads/1/3/5/9/135964228/dejabo.pdfIn PDF document text
    • https://diwimiwiwomenen.weebly.com/uploads/1/3/0/9/130969795/lerit-korumul-lavejowata.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/jojitagifuva/history_behind_mashed_potatoes.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/jspdf_autotable_set_column_width.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/92288460461.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/rixapigiwiwodubuk.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/synonyms_for_athletic_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/97260626827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6694edc0-ea9b-44ab-89ea-ccf6bd178196/zedge_ringtones_android_free_download_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/dish_network_packages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc4bee8-c4ba-48f7-bae9-718ac2b9f9c2/52150768815.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/naruto_online_oasis_games.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/how_to_write_good_essays_for_scholarships.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4fddd77-cadb-4243-93d0-11e08dc2d735/junonorisisuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/84291301092.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_off0000fca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA9 5736 bytes
SHA-256: 756d9716b82b857d153697757736b41fe85f503b7f6217efbd95b820719714d8
font_01_sfnt_off0001102a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1102A 10880 bytes
SHA-256: 83954a0b6d453230ed8f6725c0a9fe643a25d480b15b89b23350acf276b48fa8
font_02_sfnt_off00013527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13527 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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