Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f4038474d49c21…

MALICIOUS

PDF

69.0 KB Created: 2021-03-04 18:32:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c5dc048dd7687eda925d0ea3c28e966c SHA-1: 6a062519985967af58ec9a12c91c8308c0497dd5 SHA-256: 98f4038474d49c21622cfe88fa1e5fca1ddaccd2b2464f107a350e0c88b43028
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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.
  • 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://nipisod.ru/award?keyword=can+you+make+money+on+onlyfans+without+showing+your+face PDF link annotation
    • https://gitosupogule.weebly.com/uploads/1/3/2/7/132741155/subatoje_xezatimikow.pdfIn PDF document text
    • https://pidesetax.weebly.com/uploads/1/3/0/7/130739971/naferid.pdfIn PDF document text
    • https://xozilawowoxov.weebly.com/uploads/1/3/4/7/134704750/febalufer.pdfIn PDF document text
    • https://xojurumute.weebly.com/uploads/1/3/5/3/135328527/vazujizipuvi-wipatufinega-jemet.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/jibukugogidikawawi.pdfIn PDF document text
    • https://daxajofu.weebly.com/uploads/1/3/0/7/130740026/1c06f.pdfIn PDF document text
    • https://rasazumeg.weebly.com/uploads/1/3/1/4/131454762/2a9c46753c.pdfIn PDF document text
    • https://webuwoterin.weebly.com/uploads/1/3/4/5/134589655/pitozitabuwa_fidaxejoxirabi_tebefosuwe_kaxalamenimi.pdfIn PDF document text
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/vunitizusuruwal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/62837900-819b-488d-a201-581c5731f4ed/nujemitokisenorolipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5c1b78-9846-48f3-a584-1c158e622b8b/how_to_plot_constellation_diagram_in_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/interior_designer_associates_degree_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c9fdeb-35fd-45d5-ad72-9953bfd3009f/12609414644.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/kakanevirajovide.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/website_development_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/10589390280.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/chundari_vave_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/autocad_civil_3d_2019_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32358ccc-8972-4aaf-8cce-806cdad1dfdb/how_to_fix_petsafe_wireless_fence.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/nadubidotagiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51caccf8-076c-4d4b-b575-0e26502c52e6/alone_together_cast_tagalog.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/22070663859.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/go_go_scooter_battery_box_removal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa880baf-2743-4245-a7d6-e3298a3a9856/34490162899.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_off0000d193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD193 5456 bytes
SHA-256: 7adce2c751b227c8c43d3362c9825a6be467822255eef4eb9be81c2cc1d982e1
font_01_sfnt_off0000e419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE419 9976 bytes
SHA-256: 55a69a303fc63d884d16ffa2da345aa0075e041ee2fe7cd0a0db8cce7d986dec