Malicious PDF — malware analysis report

Static analysis result for SHA-256 470b2958e1a08743…

MALICIOUS

PDF

75.2 KB Created: 2021-03-05 00:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: c71cf77db77001b91767052d43a8e1c2 SHA-1: 36c607fec84a63a53cb72f60dab3e35e57251d9f SHA-256: 470b2958e1a087430f44ffda0a7112156f4871352812cb4f3c67475b672599c4
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary link to 'https://mezovuduw.ru/wix?keyword=ipod+touch+manual+4th+generation', suggesting a phishing or malware distribution attempt. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting this. ClamAV detection and ML classification confirm the malicious nature of the file, likely leveraging embedded JavaScript to facilitate the redirection to malicious sites.

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://mezovuduw.ru/wix?keyword=ipod+touch+manual+4th+generation PDF link annotation
    • http://lesitegu.iblogger.org/zezaxusepemajena.pdfIn PDF document text
    • http://mebel-albero.ru/vivexaxupixov1ymz3.pdfIn PDF document text
    • http://doordash.fun/senotelejasinomisejo6mh.pdfIn PDF document text
    • http://handler-autoscout24.com/54420012209o9ev8.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://6184de0c-c318-42a7-882e-c5ddc63b817d.filesusr.com/ugd/1c8c1e_9d72e470426149859cd82562b739cb75.pdf?index=trueIn PDF document text
    • https://da5bec28-7969-4117-8ffb-5069fce5e80c.filesusr.com/ugd/31593d_0ca13247bc0e4822816eb38e3944d017.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/54801916286.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/fuzugif.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/fugiroxikofefu.pdfIn PDF document text
    • http://muxajetolalet.epizy.com/8057158442.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/64538588502.pdfIn PDF document text
    • https://99516632-72ce-40f3-a9a1-a01c91361c65.filesusr.com/ugd/e42c35_f0845ae327db4cd58bb23b000fd62fa5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/baratza_vario_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/44469604327.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/how_would_you_describe_leaves.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/les_miserables_movie_cast_hugh_jackman.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/95583315931.pdfIn PDF document text
    • http://popeganezawojeg.rf.gd/year_planner_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/new_bollywood_mp4hdmovies_free.pdfIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_ac637d972fa841809088e6310cff4aa8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovuzize/13513121121.pdfIn PDF document text
    • https://69c5641f-197a-42c1-bef1-daa502c1f1d7.filesusr.com/ugd/948cea_ee20ec8da1e447fd9e935db4671b131a.pdf?index=trueIn PDF document text
    • http://bavidatesudujig.epizy.com/android_studio_profiler_energy.pdfIn PDF document text
    • http://kewivawegimomu.epizy.com/43131548724.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_off0000dc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC51 5216 bytes
SHA-256: 43ccc3e56093b47b424a8bf5dd132a733468f3f926973e4971959042aee02661
font_01_sfnt_off0000ede4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE4 10288 bytes
SHA-256: 3a04abb41790a10f4686b65acda9d4f51d018041a90e71d2cd4cf65975740c61
font_02_sfnt_off00011129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11129 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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