Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e08d436d8046834…

MALICIOUS

PDF

125.2 KB Created: 2021-02-25 10:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a108b245c1b9c3d418d7d114510b081a SHA-1: 9907f696b8e08f1a9d3761f87217d50ea4cf06b0 SHA-256: 1e08d436d804683459e43e42ead67b272390868c10574a19ef2c5d0e55ca406b
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jottigo.ru' and the 'SE_URGENCY_LURE' heuristic suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common attack pattern for delivering malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/strik?utm_term=is+metal+gear+solid+3+on+ps4 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4498868/normal_5fcf3e14dcf81.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/bagifojowemapa.pdfIn PDF document text
    • http://espaceabonnes.com/english_language_skills_practice_testvqtj4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5fd84b2acad21.pdfIn PDF document text
    • http://dkblogin-de.com/road_racing_world_action_fund2gxh1.pdfIn PDF document text
    • http://popularchoice.space/bibi_fatima_ka_mojza_in_urdun7vcy.pdfIn PDF document text
    • http://dfds.in/live_stream_tv_appy5n5v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471091/normal_601b8b737701a.pdfIn PDF document text
    • http://uablog.website/manegakabotupomomitati82e6u.pdfIn PDF document text
    • http://songkfrk.site/divumiwileganipez5znx7.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/bajuse/uniform_crime_reporting_handbook_2016.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/63404392883.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/bcci_cricket_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/22120315672.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/nezutekuxudiw.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/how_long_does_it_take_to_get_shipped_to_basic_training_navy.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_off00018caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CAF 8764 bytes
SHA-256: 8a44eff041831c0197463f1cadbb2f89a8d2993dd01128f4a6a291569ba6cf0f
font_01_sfnt_off0001aa0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA0F 5468 bytes
SHA-256: 93a68086fd83ef7cf2b2064dc46037af2e65657a95f4f4f0b2602d53a30d64d6
font_02_sfnt_off0001bc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC94 13068 bytes
SHA-256: ce2ace46324041578ceea3b90cbf4152ded856655f6b75667748ad55a48c26a9

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