Malicious PDF — malware analysis report

Static analysis result for SHA-256 658aa92b0089ab5f…

MALICIOUS

PDF

73.6 KB Created: 2021-02-07 05:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1e2092a9fb9832ba098be9367b0abc1d SHA-1: 05fb6c517e23467c8fb32e3a990c3446f1710f39 SHA-256: 658aa92b0089ab5ff3fc58981c282438d08b6ea485c83d9955cd9840db4a3b8e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/wb?keyword=ecole%20ingenieur%20informatique%20alternance%20paris PDF link annotation
    • http://kernig.store/super_smash_flash_2_hacked_unblocked8ilmx.pdfIn PDF document text
    • https://cdn.sqhk.co/jifegusewe/8F9OfxL/fizeku.pdfIn PDF document text
    • https://cdn.sqhk.co/xazakamugi/giGhahb/taken_souls_blood_ritual_free_download.pdfIn PDF document text
    • http://astropsychology.website/50868772055w6ngm.pdfIn PDF document text
    • http://lijijuzopos.iblogger.org/advantages_of_internet_in_education_field.pdfIn PDF document text
    • http://tipaxoj.66ghz.com/junior_scholastic_answer_key_january_7_2019.pdfIn PDF document text
    • http://putinoid.ru/smash_it_with_a_hammerqjzod.pdfIn PDF document text
    • http://tvoyoproc.fun/1989_ford_f150_repair_manualowrdn.pdfIn PDF document text
    • http://7lessons.space/62879085037lj1hk.pdfIn PDF document text
    • http://activa-fb.com/braiding_hair_salon_near_me0dspq.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/jedobufudajewu/free_annual_credit_report_gov.pdfIn PDF document text
    • http://pibanifadedo.epizy.com/muvofabovax.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/insect_pest_of_cereal_crops.pdfIn PDF document text
    • http://jotavuwejopilo.rf.gd/26502713921.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/cra_canada_ei_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/vusigutexovokifuluma.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/88495792751.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/exit_interview_form_template_doc.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_off0000de5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 5420 bytes
SHA-256: fbb5c2d1c2fab30f5296a45dc0d61fb70a42b90b5109180dd396502c53ff29b3
font_01_sfnt_off0000f0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B5 12140 bytes
SHA-256: 68c9fa816ff8f1cff80579e903da8126c402cd378c73ee41361ef8e7486cfff1