Malicious PDF — malware analysis report

Static analysis result for SHA-256 db01206f02a12036…

MALICIOUS

PDF

93.4 KB Created: 2021-02-11 22:02:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 924cd386bfb0efc6345b27f482f35d7b SHA-1: f2d8225d2ae78435f61c064e8a5ae6104a16940d SHA-256: db01206f02a12036cb1da3524c0dcf9b7fec0342265ffc3335e3352dbf8ddaa9
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 0.9997

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
  • 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://druttle.ru/123?utm_term=jailbreak+iphone+4+ios+7.1+2+untethered+evasion PDF link annotation
    • http://lesanuzununefa.22web.org/carol_of_the_bells_piano_solo.pdfIn PDF document text
    • http://bionatur.space/torn_labrum_hip_exercisesf5tdw.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/zuxudam2bozf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446512/normal_5ff314ebe4582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413967/normal_601b0ae26d041.pdfIn PDF document text
    • http://reduslim-ufficiale.website/manual_do_drone_e58_em_portugus46mh2.pdfIn PDF document text
    • http://probkin34.xyz/food_processing_equipmentwt44y.pdfIn PDF document text
    • http://english-10.site/shake_shack_promo_code_online1yajp.pdfIn PDF document text
    • https://nabezaxe.weebly.com/uploads/1/3/4/8/134852032/ed5616.pdfIn PDF document text
    • http://juvugewit.iblogger.org/31554404305.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/sesijesule/buwaveve.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/lufuguminijafiwi.pdfIn PDF document text
    • http://fereralud.epizy.com/lissandra_build_guide_s9.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/my_booky_wook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/71223860263.pdfIn PDF document text
    • http://dokedajonanumi.rf.gd/britannica_illustrated_science_library_free.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/goodreads_app_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/15062153482.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/vizezegu.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/bangla_old_song_ringtone.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00013dee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13DEE 24044 bytes
SHA-256: 3fa6da39db87557f5beff04b28e79e0c9346d75d1b2b407ed329576210d3d720
font_00_sfnt_off0001053c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053C 5684 bytes
SHA-256: 3901bda1d2bb0225f24b19a8e2f07e41a60a48da202c99c244af20dae11cd27c
font_01_sfnt_off000118a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A5 10796 bytes
SHA-256: 4cae3d630c503fabfcd63223a85a4ca9d7b4188f35688e4d881beaa60f3c0557

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