Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e2ac03f5fbacb2…

MALICIOUS

PDF

74.5 KB Created: 2021-03-23 19:16:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e144c910f62203645ebe4ae2f7d0b6b0 SHA-1: 9db9e7ec1529bd58a3e36bffc27660e679cdec99 SHA-256: 80e2ac03f5fbacb2c800c23914575e9c402e73446bff18ab7d64f9a32eb0e7a9
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 0.9993

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://midufefew.ru/wix?keyword=4+day+dumbbell+workout+plan+pdf PDF link annotation
    • http://dsv-trening.ru/famous_artists_schoolv6ksn.pdfIn PDF document text
    • http://itravelgr.com/sivikofiztjjbn.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/zhhiajf/20402269854.pdfIn PDF document text
    • https://cdn.sqhk.co/xokunafuse/Oid7njj/jedinov.pdfIn PDF document text
    • http://ragofilud.medianewsonline.com/6598878951.pdfIn PDF document text
    • https://linonojito.weebly.com/uploads/1/3/1/3/131380720/6f3a5b66989c.pdfIn PDF document text
    • https://lerusebarumawod.weebly.com/uploads/1/3/4/4/134478547/motorifupawuwu_junikeju_kazavuke_sijin.pdfIn PDF document text
    • http://fumatiw.mypressonline.com/riichi_mahjong_strategy.pdfIn PDF document text
    • http://2022god.com/vakujev1wnuu.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/7jbkMja/81661070759.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/hbTEjay/personal_panic_alarm_keychain.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/tgesW1w/family_events_today_in_ct.pdfIn PDF document text
    • https://rinuxusopav.weebly.com/uploads/1/3/4/6/134679155/3b18fd6.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/JifXW8o/42620878205.pdfIn PDF document text
    • https://denapifikuzo.weebly.com/uploads/1/3/4/6/134634031/nugoneganexemol_vewilekadox_tutezotolo.pdfIn PDF document text
    • https://xedagiwaki.weebly.com/uploads/1/3/1/8/131856626/daribozebunazixuju.pdfIn PDF document text
    • http://idealica-co.site/scag_tiger_cat_seatmdx58.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/samsung_tablet_ce0168_battery_removal.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/iHghOsM/16281610245.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/xisefowu/hp_probook_430_g6_notebook_pc_datasheet.pdfIn PDF document text
    • http://livirava.atwebpages.com/coleman_propane_furnace_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/vejiwavidifizuwelunutu.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/nonedoxaseximuzimevo.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_off0000e496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE496 5400 bytes
SHA-256: 60208c12ddb2c112ca76a237845f807bbdf098880ac9afdf5a3f6b61c0f0782d
font_01_sfnt_off0000f6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 11112 bytes
SHA-256: 985098a6d299d9f0fe1a985aacceee972ccb8affaf99eeee3ccd856b67545008

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