Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1278a6698512c2b…

MALICIOUS

PDF

69.9 KB Created: 2021-04-29 00:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d78f62f2fb613201eeb8c3fc27dee4a8 SHA-1: 51b1a3aa2dd2d0b2f414ce9a4b3d1b23579306dd SHA-256: e1278a6698512c2bca029a28ea8a23dfac9fa901282a296aa8568f1fcc3b9162
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=what+is+the+lug+pattern+on+a+2020+ford+ranger PDF link annotation
    • http://drilltech.info/parrot_mki9200_software_update_deutschzmtkb.pdfIn PDF document text
    • http://tortomsk.ru/604467976f67s1.pdfIn PDF document text
    • http://pannochki-art.com/rowosazu0sful.pdfIn PDF document text
    • http://zotikarida.medianewsonline.com/automotive_chassis_engineering_barton.pdfIn PDF document text
    • https://cdn.sqhk.co/telivagawu/jD5csge/train_controller_aim.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/daxoxovisefusomedupukin.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/g3ieLij/wigavesazajosatufap.pdfIn PDF document text
    • http://ewop.space/skyrim_bodyslide_cbbe_tutorial5vtoz.pdfIn PDF document text
    • http://gramnews.xyz/60173296081sumou.pdfIn PDF document text
    • http://podarokinsta.site/jacoco_merge_reports_mavenpgs48.pdfIn PDF document text
    • http://biomanua.website/lirofifejezapuxanuv86pxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dajomilot.atwebpages.com/sat_subject_verb_agreement_practice.pdfIn PDF document text
    • https://a26b494c-4f54-4b9d-aaa3-e02d462d315a.filesusr.com/ugd/c6268f_cffbd7e52b61437286463a9c79ff3b43.pdf?index=trueIn PDF document text
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_a71f79cb72ba471eba6ece987100a56e.pdf?index=trueIn PDF document text
    • http://napamewa.atwebpages.com/calendario_feriados_2020_argentina.pdfIn PDF document text
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_1c34a096f3274312a6c2e041f3d9081f.pdf?index=trueIn PDF document text
    • https://00eaa6b3-f026-4720-b00f-fafb40066352.filesusr.com/ugd/d498be_72190954df914b4989f76862ad7c1074.pdf?index=trueIn PDF document text
    • https://5a8aee2d-3d68-4c09-98ed-743c9c56d6fd.filesusr.com/ugd/460efe_625fd35fb39e4ebb94bf6549023c18e3.pdf?index=trueIn PDF document text
    • http://xekapakifujekem.onlinewebshop.net/60646476617.pdfIn PDF document text
    • http://fetekovabu.onlinewebshop.net/gakiwinepuzetisedaripukup.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34D 5588 bytes
SHA-256: d6cad9ae8ef53c0ba4016cf8d4c7e511214a2d76e433d3442d5e6866fa28b21d
font_01_sfnt_off0000e659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE659 9976 bytes
SHA-256: 0b5228af637371e91f07b1581606d986441e70e6c1404e73027de100da7d8cde

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