Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7a4eb778a2911e…

MALICIOUS

PDF

79.9 KB Created: 2021-03-05 10:50:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b03cb8619cf8277b2b29afc8392488e8 SHA-1: 656421db99d12411f3c1a0745c12448d3a48375d SHA-256: ab7a4eb778a2911e580b4f957ac18b9af7a3ba569bd03ac2fc01797c347b102d
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://lozipotod.ru/wix?keyword=appvn+apk+download', suggesting a phishing or malware distribution lure. The document body is heavily obfuscated, but the presence of the URI and the ClamAV detection name 'Pdf.Phishing.Trojan' strongly indicate a phishing attack pattern.

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://lozipotod.ru/wix?keyword=appvn+apk+download PDF link annotation
    • https://cdn.sqhk.co/netesatova/71jfijz/33888392503.pdfIn PDF document text
    • https://cdn.sqhk.co/vetelojid/f7jbMSq/28473994051.pdfIn PDF document text
    • http://trysucre.pro/la_la_la_land_piano_sheety7ms2.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/is_an_unrecorded_deed_valid_in_california.pdfIn PDF document text
    • http://hangookoil.ru/tojonojumpbqht.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/drinkwell_platinum_pet_fountain_troubleshooting.pdfIn PDF document text
    • http://indital.space/amalina_song_in_tamilzyw9f.pdfIn PDF document text
    • http://tifusavegapawuf.mygamesonline.org/73645358676.pdfIn PDF document text
    • http://tidemelewofu.iblogger.org/16223558628.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://s3.amazonaws.com/wixamupelinere/fozor.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/67080291947.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/cobol_6_programming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/kiturapive.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/brawl_stars_pc_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/marvel_future_fight_new_version.pdfIn PDF document text
    • http://jaxojuruwak.rf.gd/return_authorization_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/access_control_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/guideline_heart_failure.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_off0000f2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B9 4428 bytes
SHA-256: 9acb87249e35f13c4a914af41e5010b1252091053d60bc0769d22efdb44ac5f1
font_01_sfnt_off000101d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D5 10184 bytes
SHA-256: deebc5345a146e63c8fafd1170e124674911730654476dbd7d328402ab9ffb1e
font_02_sfnt_off000124b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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