Malicious PDF — malware analysis report

Static analysis result for SHA-256 8196494d482900a3…

MALICIOUS

PDF

76.9 KB Created: 2021-03-26 07:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7ea0090c96dde7f9a6436f141bffc7ae SHA-1: a0a83f3d593e0e839e8c5a1bb636e06d2ce62636 SHA-256: 8196494d482900a3486daf445531c4dc71da31a3947b97a76b21eac821952743
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/123?utm_term=bourne+identity+full+movie PDF link annotation
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/1343018.pdfIn PDF document text
    • http://kajejib.medianewsonline.com/cellulitis_and_diabetes.pdfIn PDF document text
    • https://pufotesur.weebly.com/uploads/1/3/1/3/131378771/xigavejanudigubijaki.pdfIn PDF document text
    • https://vimititop.weebly.com/uploads/1/3/4/3/134339659/715441.pdfIn PDF document text
    • https://tapelurefufud.weebly.com/uploads/1/3/5/3/135316676/8569161.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/biology_student_textbook_grade_10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ffcaff73-c5a4-431b-ba4e-e991a9f00dd7/survival_skills_training_nyc.pdfIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_77eb70a34288470696365e2aef42004a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/310b0b94-9b4f-497b-b00e-ab68475b97a9/dell_inspiron_n5010_laptop_keyboard_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/lelanavagajojuzovub.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/capitalizing_words_in_a_sentence_capitalization_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/aadhar_card_mobile_number_change_form_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/271ddd91-44a2-45c4-9376-a37ebef712c0/ledewa.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_b795499ea9d2465c9003f1ba20e47b58.pdf?index=trueIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/risomuruxakopivumokazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a4573ab-cd74-4c6b-94f5-f3cccfd477fc/place_value_chart_printable_2nd_grade.pdfIn PDF document text
    • https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_744a915172a64330b19cf9ddf76e97f5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa0bb16-d427-4961-93de-8c6a9ec83ede/52389513640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/258e3690-91da-42be-9332-4a8f6a9238ce/how_to_improve_dog_joints.pdfIn PDF document text
    • https://f18b8dc1-3ce9-44bd-8712-01435d039869.filesusr.com/ugd/b97cba_f424d265ab53466cb1e6d042836cc8e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/base64_to_encode.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_off0000e055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE055 4760 bytes
SHA-256: 7d938b848be70ebcce9613ab1408aec677f0891db844ced7fbe7380b6a425cd0
font_01_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 11792 bytes
SHA-256: 2c69d7037c97e4296aff908f90090017b45a4a601d477fb9d22390f070a7bdfa
font_02_sfnt_off0001182f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1182F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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