Malicious PDF — malware analysis report

Static analysis result for SHA-256 338ba996e92645d2…

MALICIOUS

PDF

77.4 KB Created: 2021-01-29 00:00:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 99432c792bd73bce76fa196b4f9a70d2 SHA-1: 67da6130a3ad606aa6a0df5fe51c7a4aaba769fa SHA-256: 338ba996e92645d22070496f2f50da798843ccb4c0b3555a48c346043840e64e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for a large external link farm. The embedded URLs and the PDF structure suggest an attempt to redirect users to potentially malicious content. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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.
  • 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/123?utm_term=dsp+manager+and+equalizer+pro+full+apk PDF link annotation
    • https://bagukewedofitaf.weebly.com/uploads/1/3/4/5/134507185/d46a4f05d3.pdfIn PDF document text
    • https://datokusowijodo.weebly.com/uploads/1/3/0/7/130776434/f4ef34e1.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/c46a6.pdfIn PDF document text
    • https://lerozezowigex.weebly.com/uploads/1/3/0/7/130776164/471cda3ac2.pdfIn PDF document text
    • http://telgrm.site/hop_valley_springfield_phone_number9inhm.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/268376.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/zuzitavaki.pdfIn PDF document text
    • https://safalijig.weebly.com/uploads/1/3/1/0/131070993/bumaripum.pdfIn PDF document text
    • http://bubble1.space/nesezorikupivutizsx5.pdfIn PDF document text
    • http://twirlini.com/free_ringtones_for_iphone_7_without_itunesi0f7a.pdfIn PDF document text
    • https://vagofavom.weebly.com/uploads/1/3/4/4/134486407/7827039.pdfIn PDF document text
    • http://pumba.fun/uzun_lafn_ksas_kitapyta49.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/437447.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/xufus.pdfIn PDF document text
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/tivewe.pdfIn PDF document text
    • https://bumesusibob.weebly.com/uploads/1/3/1/8/131857970/xorepa.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/vedexajawo/access_2003_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/57671019854.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/lelozibujuno.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/98646276971.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/blue_crab_fishing_report_ct.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/northern_eurasia_physical_map_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/bazupokefotiv.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/33806400661.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD8 5600 bytes
SHA-256: 75ac312918d7edc61595d0030b90633358cd132ebce246a37ca517c9283b2250
font_01_sfnt_off0000edda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDA 10908 bytes
SHA-256: 14e53e82cfeafa893c54a0ecf871bc38a74e8bba31bba363d8778ef0c9be82bc
font_02_sfnt_off000112ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AB 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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