Malicious PDF — malware analysis report

Static analysis result for SHA-256 717824a1152105f8…

MALICIOUS

PDF

82.8 KB Created: 2021-01-11 17:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: a91bc71b07fe436537d01b938051299d SHA-1: 2b0ea0cafb0b7302403d82953f2feea9f9e4cc94 SHA-256: 717824a1152105f8ffe8230964b8913c4d11f51e1d44f8e52d15efa10982e118
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious and contains a large number of embedded links, many pointing to disposable hosting services. One URL, 'https://cctraff.ru/aws?utm_term=brick+mansions+full+movie++in+tamil', appears to be a redirector. The document's structure and link farm suggest it is designed to lure users to malicious content or phishing sites, potentially disguised as search results or file downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://cctraff.ru/aws?utm_term=brick+mansions+full+movie++in+tamil In PDF document text
    • https://patewolenapew.weebly.com/uploads/1/3/4/5/134525441/jirukufosukova_gabimisevor_fukijofu_nolotub.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/7068679.pdfIn PDF document text
    • https://site-1168244.mozfiles.com/files/1168244/kemeredoneziwafexedup.pdfIn PDF document text
    • https://site-1166752.mozfiles.com/files/1166752/linuwejudodapetabo.pdfIn PDF document text
    • https://site-1168511.mozfiles.com/files/1168511/williamstm_pinball_universal_monsters_pack.pdfIn PDF document text
    • https://site-1171722.mozfiles.com/files/1171722/my_aviva_ireland_register.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/cifdTUn/change_management_books_2020.pdfIn PDF document text
    • https://wuriwodek.weebly.com/uploads/1/3/4/6/134688082/sifivigas.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/wiranezi_zopevonanud_wovinaronubulut_suwuxedog.pdfIn PDF document text
    • https://sejejuno.weebly.com/uploads/1/3/4/4/134447194/bepipekibesa.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/2Trm2ct/holistic_nutrition_and_health_coach_certification.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/xyiiWih/28852417060.pdfIn PDF document text
    • https://site-1174832.mozfiles.com/files/1174832/94250842702.pdfIn PDF document text
    • https://site-1174761.mozfiles.com/files/1174761/gumagivufefizukegenisov.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/xexugisusiposupupe.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f8b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF8B9 11268 bytes
SHA-256: 8de5baca0f428ab02508994a568f5dc074d6aac080a9128ebda05b8c1b2c221d
font_00_sfnt_off0000e71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71A 5200 bytes
SHA-256: ffa8310aa0f309d46ae55e4bc2c5bbeedb0dc81e63400c779e05ea218e284671
font_02_sfnt_off000116f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F4 11684 bytes
SHA-256: 3d1c50c644a3c8c020bb4f3141e9c6901cfea623be2cc4d9ae5cbee116ae9420

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