Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9928bc68138a69e…

MALICIOUS

PDF

78.4 KB Created: 2021-02-28 01:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3cca7373388d0d8ed75b35f53f5707a8 SHA-1: 91df400ff9804cdba83dd794d0b432bfd4b51747 SHA-256: e9928bc68138a69ea8bfef331b2ee4f9e2785cc8dd5371e2e00d3f4b8b4279b5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing or scam content, disguised by a seemingly legitimate topic. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=how+to+start+an+indoor+baseball+facility PDF link annotation
    • https://cdn.sqhk.co/xunijejozi/haZfwji/89769737123.pdfIn PDF document text
    • https://cdn.sqhk.co/fikubife/9vZiifp/go_kart_dune_buggy.pdfIn PDF document text
    • http://samettemiz.xyz/all_of_me_lyrics_filei2rps.pdfIn PDF document text
    • http://lessonsonline.site/tukezuwojewira5gz36.pdfIn PDF document text
    • http://gawivekarebuvus.22web.org/what_to_do_for_a_callus_on_your_hand.pdfIn PDF document text
    • http://dvestideyli.xyz/photo_editor_collage_maker_descargar_para_pcbsn5i.pdfIn PDF document text
    • https://cdn.sqhk.co/pubusudes/gjtfja8/happy_day_orange_cena.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/hih0hgg/87073204516.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/jobavo/begosivizugot.pdfIn PDF document text
    • http://likawunudonanep.epizy.com/emulator_android_yg_ringan_di_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/just_do_something_kevin_deyoung_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/wowomedejipewuzex.pdfIn PDF document text
    • http://vesevujivodekut.epizy.com/gedudakubereresaletuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/37977919261.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/nhtsa_manual_2016.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_off0000f504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF504 5312 bytes
SHA-256: b2aacf694254838494bae9524934ad083be67b255b3ec0a1c0da0aa109e9dd21
font_01_sfnt_off00010738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 10752 bytes
SHA-256: 8bbb9dac03f2429d29f33d5f13c5ee7cc37f783cb9579b680a5533baeecfdcb0

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