Malicious PDF — malware analysis report

Static analysis result for SHA-256 340adfc8a8cc4db0…

MALICIOUS

PDF

79.9 KB Created: 2021-03-09 19:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fc5e10fef7a299f41b38d6ed908035ef SHA-1: 1e6a726dca54f0ed55f4ab2211c6cbae680e5d84 SHA-256: 340adfc8a8cc4db0864a992bcb3985f93c444a844d28e5b447a23d320d55c02a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which are disguised as academic resources, pointing to a link farm. The primary malicious URL identified is 'https://lozipotod.ru/award?keyword=cambridge+igcse+computer+science+coursebook+sarah+lawrey+pdf', which likely serves as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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/award?keyword=cambridge+igcse+computer+science+coursebook+sarah+lawrey+pdf PDF link annotation
    • https://nagofojog.weebly.com/uploads/1/3/4/5/134586362/gixoxefuwow.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/1606509.pdfIn PDF document text
    • https://gupekuvexo.weebly.com/uploads/1/3/4/6/134610658/cd559c625f3493.pdfIn PDF document text
    • https://pagowabelada.weebly.com/uploads/1/3/0/8/130874520/3879300.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_9f16af76ab1047e888df52c64ddd2247.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fixararololu/neditonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2817f142-34bd-4d85-bf16-5753e782e47a/purak.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/7431440600.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/what_are_the_different_stages_of_sdlc.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/16270657019.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/autodesk_3ds_max_2014_keygen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8ceb25e-e3f2-4e16-a94e-9aee5fcbc331/xozoneveko.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/basic_electronics_objective_questions_and_answers.pdfIn PDF document text
    • https://1094d5c0-a920-47c7-a1de-7e2d56a92d84.filesusr.com/ugd/47b1e8_7807948868e44a978fec625b12c0f10d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/wulipijuli.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/sekiwamolaxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/915c52ee-8a94-4ceb-b934-c2e3e5dddfbe/how_to_print_entire_dataframe_in_python.pdfIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_c69cd98f0dde433687423d13ccab8f7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxunaf/61798112114.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/vinogotabifurav.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/lutoki.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/17739370870.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE301 5872 bytes
SHA-256: b0285accb52e1b3742b1a58e7f21546ac8e5569f73812189a7d0a94c3e2d9a6e
font_01_sfnt_off0000f6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E2 10964 bytes
SHA-256: ad42e110134cb94485ab0a271eacf55740f0fe2218cb60999377fab791f70ca0
font_02_sfnt_off00011c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1F 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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