Malicious PDF — malware analysis report

Static analysis result for SHA-256 e803f9302f166408…

MALICIOUS

PDF

86.2 KB Created: 2021-04-03 12:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8603a0984068e5e1f08ba1a4031ead3d SHA-1: 09bf3c5341e8c8fd18aad9977154da20c227af2f SHA-256: e803f9302f166408c15bb810cc7aeb5ce023a57dec2d96046c4d9b09e0d03d84
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, indicative of a link farm or phishing attempt, with one URL specifically mentioning 'fake gps pro android apk'. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and external links point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://kuzutuzo.ru/wix?keyword=fake+gps+pro+android+apk PDF link annotation
    • https://gafibuludumogid.weebly.com/uploads/1/3/1/4/131453415/jipebaxivemavu.pdfIn PDF document text
    • https://dekajemo.weebly.com/uploads/1/3/1/4/131453049/butuvenopodufibisen.pdfIn PDF document text
    • https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/1c2d935017853.pdfIn PDF document text
    • http://dusibarupuguli.medianewsonline.com/lupuferatinirujefif.pdfIn PDF document text
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/kejewoda.pdfIn PDF document text
    • http://jugepawe.medianewsonline.com/already_and_yet.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/gotazunux.pdfIn PDF document text
    • https://lubavezutumeji.weebly.com/uploads/1/3/4/7/134757539/kuketenugolefif.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/xapidajovaji/zagaxop.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/ffxiv_4._0_desynthesis_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/adobe_spark_video_fr_android.pdfIn PDF document text
    • http://bosabesebomixeb.epizy.com/homer_iliad_english.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/niwirevepono.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/mebedukiwunulenagasut.pdfIn PDF document text
    • http://punipovudipani.rf.gd/6361331597.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/zefugizofokukevufafip.pdfIn PDF document text
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_7ecbabe81d5e46ca9f8b21fbbd7c73cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/legipalofi/86575185918.pdfIn PDF document text
    • https://878ee1be-828d-48b9-a24a-84283cf66a1c.filesusr.com/ugd/86936c_68302307bd7c41698724fee16727c94e.pdf?index=trueIn PDF document text
    • http://bozagasixafovo.atwebpages.com/traditional_workbench_plans.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/20962539664.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/american_pie_piano_sheet_music_easy.pdfIn PDF document text
    • https://37cc4ef3-276f-49d0-84f3-8bc08bbde6a9.filesusr.com/ugd/e4a5d4_4c3fd7f8b3994e39baaefafe6056d9ab.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D7 4824 bytes
SHA-256: 7976736f9db12bc1ba2dd3020924fdbd5efe457facd650dd187911749359d1dc
font_01_sfnt_off0000f53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53F 3024 bytes
SHA-256: cf5ed4f450e5fc1fa31c8ac31b5dbd05637a4ba05cdfa332ae769b600578e534
font_02_sfnt_off0001006d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006D 11096 bytes
SHA-256: 1bc78c21cb0d451c2d7d4b37102a12c3e49c835c9044beabc871fa2f3d5c9aa1
font_03_sfnt_off0001264c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264C 16660 bytes
SHA-256: 0b4f9904cc63eeb245c31300081beae5dd130040598f84ad13cd294c90142161
font_04_sfnt_off00013c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C7F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333