Malicious PDF — malware analysis report

Static analysis result for SHA-256 77f41ab818941e3e…

MALICIOUS

PDF

68.9 KB Created: 2021-02-28 03:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b88b264d66e24508a21457caa547e304 SHA-1: 6cf3d1948b07feaffe577d72ed80e54e81bc03c8 SHA-256: 77f41ab818941e3e24992fc65d5c5d33bddc9fba03a6b804d29a98c31c7a7e67
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://nipisod.ru/award?keyword=casio+fx+115es+plus+display+decimal PDF link annotation
    • http://reawolt.online/jetekufanilosozozm72k7.pdfIn PDF document text
    • http://popapirim.22web.org/23790685408.pdfIn PDF document text
    • http://zonixutazexe.iblogger.org/why_was_george_killing_lennie_justified.pdfIn PDF document text
    • http://goodsun.space/augmented_reality_app_android_free7m5ma.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/47883124303.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/pabumonugonoremesipet.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/what_does_chrysanthemum_look_like.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/vuken-xadiwodib.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/guranovilavononowe.pdfIn PDF document text
    • http://dagomakiluje.iblogger.org/jevolidu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tufebogepamik.rf.gd/basara_heroes_2_for_android_ppsspp.pdfIn PDF document text
    • http://gujomodezeroj.epizy.com/can_you_fly_without_a_valid_drivers_license.pdfIn PDF document text
    • http://pabenikazugaj.rf.gd/pass_arraylist_of_objects_in_bundle_android.pdfIn PDF document text
    • http://zarirebotiz.rf.gd/11991200967.pdfIn PDF document text
    • http://wevevaviz.epizy.com/adobe_animate_cc_32_bit.pdfIn PDF document text
    • http://togujekunigek.rf.gd/the_school_for_good_and_evil_book_2_free_download.pdfIn PDF document text
    • http://dozonox.epizy.com/ribanizaxebipikabu.pdfIn PDF document text
    • http://buposubugoromot.rf.gd/rojerafopoku.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_off0000cf26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF26 5456 bytes
SHA-256: 5027498a06bbe8be60905dca949dd960608f12e28d353bb12b6f56fd58fc1c10
font_01_sfnt_off0000e1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 10792 bytes
SHA-256: 7296b60926ee6170ce0f3f694ac155e48f8fc94c421a468fc6cfa0e37ee4a6f9