Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b8edf1d5c86914…

MALICIOUS

PDF

86.7 KB Created: 2021-03-13 14:26:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052a002ccfece659b50a1b64ec40cfdc SHA-1: 9f069451890cf4b7d3b2cdf33f094fddf2562fc1 SHA-256: 69b8edf1d5c86914b12b275ba77484b644eaa1b02c01079ab7eadec271bf463b
104 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The presence of an external URI pointing to 'seumenha.ru' suggests a phishing or malicious download attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious document, likely delivered via spearphishing.

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
  • 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://seumenha.ru/strik?utm_term=biochemistry+textbook+free
    • https://static.s123-cdn-static.com/uploads/4506063/normal_5fcb4a0c79f34.pdf
    • https://cdn-cms.f-static.net/uploads/4387810/normal_60148bd3a76dc.pdf
    • https://cdn-cms.f-static.net/uploads/4448549/normal_5fd8359be72e1.pdf
    • https://cdn-cms.f-static.net/uploads/4458849/normal_603157735e9de.pdf
    • http://kulotufiw.mypressonline.com/zalujebu.pdf
    • https://cdn-cms.f-static.net/uploads/4485162/normal_601bcbee5c765.pdf
    • http://xiwesesakuvel.medianewsonline.com/how_to_use_universal_waite_tarot_deck.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://uploads.strikinglycdn.com/files/afad8831-df60-4b7b-8024-4d91dc5b9428/free_download_m-audio_fast_track_c400_driver.pdf
    • https://s3.amazonaws.com/kawotexulozax/empires_and_puzzles_guide_reddit.pdf
    • http://ropupifalapoges.atwebpages.com/grammaire_progressive_du_franais_niveau_debutant_corrigs.pdf
    • https://s3.amazonaws.com/sezewu/wagopaxexibipanejomowe.pdf
    • https://s3.amazonaws.com/retobifulipo/sowirez.pdf
    • http://vujapoguxesak.myartsonline.com/first_90_days_app.pdf
    • https://s3.amazonaws.com/jasipefulaxiduj/57058636604.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/befomuguze.pdf
    • https://s3.amazonaws.com/polexebuj/final_fantasy_vii_guide_official.pdf
    • https://s3.amazonaws.com/wusone/4642699195.pdf
    • https://uploads.strikinglycdn.com/files/cfef4c46-a116-4876-a44c-6284e52e9ced/unitedhealthcare_dental_provider_customer_service_phone_number.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010521.bin
7623f1c0e8b23815a77ef6a21c2a7919f89cb064434850fa53b51f3938b1ff9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10521 5304 bytes
font_01_sfnt_off0001170d.bin
d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1170D 6068 bytes
font_02_sfnt_off000126be.bin
5e1c7d0a475b5ff238b24ba23db345f68724aedb7dae668bd4e6415ad3babf20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126BE 11492 bytes

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