Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb777025a175f7d…

MALICIOUS

PDF

58.0 KB Created: 2020-10-15 21:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4d8ec38ca0e282d0dd43ffd2bbb316f4 SHA-1: 49ea91d76f1e0fab3c4e77e92b7bb7bb06c7e5c0 SHA-256: bbb777025a175f7d727ad035a7c2e4b5bba735b12623757f5a95685e21a50a7d
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?keyword=samsung+monitor+24+inch+manual In PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/tevow.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/sujafix.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/pugofabo-dologoruwiz-xavofiwukajuzi-tunesutowib.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/gurom.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/ridoxugo-nefufirugakusi-pevogomoxi-relomikututezom.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/f9007.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/4106527.pdfIn PDF document text
    • https://site-1037267.mozfiles.com/files/1037267/80015576434.pdfIn PDF document text
    • https://site-1042181.mozfiles.com/files/1042181/baviwikowezuwazebekisifo.pdfIn PDF document text
    • https://site-1040800.mozfiles.com/files/1040800/51252154345.pdfIn PDF document text
    • https://site-1039915.mozfiles.com/files/1039915/tubepinobi.pdfIn PDF document text
    • https://site-1045392.mozfiles.com/files/1045392/99340384806.pdfIn PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/86743547110.pdfIn PDF document text
    • https://site-1048220.mozfiles.com/files/1048220/mezazowozana.pdfIn PDF document text
    • https://site-1039815.mozfiles.com/files/1039815/digofowazudose.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/fdeafee4-94ae-4c67-a3da-1302a18b78a9/52405432444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e21c591-3591-4aed-b339-9e145e800ac2/dekidarunerafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c8e76c-2733-44f8-96f1-7a9582b67f72/11030926708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d075ab8-b30a-43c6-9ddc-b83f84870599/30926231860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7327/2996/files/designing_a_hand_warmer_lab_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0747/1527/files/kukabejarezovixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/zuboju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7221/7787/files/acute_gi_bleed_management_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1365/4696/files/taperizetilepawipivos.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_off00009567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9567 5536 bytes
SHA-256: 57edfc381f5488aa83056ef59a7a10aa4fc7e757e3a9090a77d056d90f02dae0
font_01_sfnt_off0000a80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA80B 16340 bytes
SHA-256: f60249b4c8dc988f48a13de9bf940809559d2dc13b49d3316dc7e4438b011b02