Malicious PDF — malware analysis report

Static analysis result for SHA-256 6507b65637a574b9…

MALICIOUS

PDF

80.5 KB Created: 2021-05-25 10:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c2a2dd4dc5720ca9d91c86ffbffd6b7d SHA-1: dde490b8aefccfec1a509c7393aebee81bac1e7d SHA-256: 6507b65637a574b9af42c4cf54e13ef32e8dd1b9a9a8efa9cf267e238d1e9214
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/strik?utm_term=transformers+5+full+movie+in+tamil+hd+free+download+tamilyogi PDF link annotation
    • https://malizopal.weebly.com/uploads/1/3/5/9/135962708/2423428.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/nanenilageseli_jaropamo.pdfIn PDF document text
    • https://mefimume.weebly.com/uploads/1/3/1/4/131437875/jafeva.pdfIn PDF document text
    • https://wevapagavum.weebly.com/uploads/1/3/4/3/134306171/ruwifudaden.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea5bbb3-85e7-4cec-99e2-d3ce1abba8d3/23578051368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57026bfc-22a8-40d2-9dff-e8b12e490e75/91216621974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7932264-eeaa-414a-9f84-7d015e2f72e9/tomorrow_when_the_war_began_book_synopsis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a98484b-b2e4-4cd8-81ab-2c7e1e356127/city_of_ashes_audiobook_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710f3bb4-6b82-4112-afff-29a83ff869f6/ingenuity_baby_bouncer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/281b5138-5df6-43d6-a8fb-2c79acc4aa59/dopujevesapajatatufexuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df78063-f8d9-4f9c-a846-421361dbfb83/what_can_you_get_clone_drone_in_the_danger_zone_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2889fe83-ab6b-462e-95a4-0943daf7a019/surah_al_mulk_full_mp3_free_download_mishary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72ede227-8c14-4a32-a5a7-d5495144089c/hoover_dual_power_max_carpet_washer_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e4ec44-7b0b-4c3d-9d5a-6b1d521c4dfb/pitugegesasulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eafbec42-fd1f-485f-96f8-a3ee533c9971/who_is_related_to_abraham_lincoln.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3083bc1-63e6-4490-96e7-161d63aaa80b/dijimunenobedelituguvis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c62cc5-8a2c-48eb-a63f-60be30dc8cad/mevigukomogerevopokebupuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e14290c-f96d-4938-8670-18b6b22e4fee/eragon_full_movie_in_telugu_download_tamilrockers.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_off0000fc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8B 5648 bytes
SHA-256: 2e49e57f7cc825cc619fe001621503c0f5edd9dc96a80ae519daa24d96c49f1c
font_01_sfnt_off00010fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB1 10732 bytes
SHA-256: 20a9f9c956b27ecb30b0f05fbf435a1a979ab8add2a65eebacf3fc3f060b5024

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