Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0d7ea4f6f63bf8…

MALICIOUS

PDF

59.3 KB Created: 2020-10-07 02:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 59d968a055c79af363cb95ca12f67172 SHA-1: eb229943df898997487601bec3456f3768760939 SHA-256: 9c0d7ea4f6f63bf89d307bdb22e59c011c51c1716a39499a7f4cd1562dd2df79
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.club/pify?keyword=hot+wheels+treasure+hunt+price+guide+2019 In PDF document text
    • https://site-1037218.mozfiles.com/files/1037218/76969195802.pdfIn PDF document text
    • https://site-1038583.mozfiles.com/files/1038583/944474597.pdfIn PDF document text
    • https://site-1038967.mozfiles.com/files/1038967/61622850503.pdfIn PDF document text
    • https://site-1040987.mozfiles.com/files/1040987/tikoxuve.pdfIn PDF document text
    • https://site-1048576.mozfiles.com/files/1048576/pinama.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/nigefivo.pdfIn PDF document text
    • http://files.donaldhalemusic.com/uploads/1/3/0/9/130969695/3861589.pdfIn PDF document text
    • http://files.remember-to-smile.com/uploads/1/3/0/7/130776220/9681005.pdfIn PDF document text
    • http://vuropekeb.stadtdenken.com/uploads/1/3/1/3/131378960/rexeluzixomo.pdfIn PDF document text
    • http://zitifedak.gpanm.org/uploads/1/3/0/7/130738779/nalemaxubix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8ead62dc-e5d0-48a8-8b00-7cf225495df0/wupudalofazubututib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/028492e7-6996-4959-98b1-d25f05e6b83d/51510988959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7981a95c-78d9-4ada-ae4c-77d114eded14/wowiwenilafuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80522b3f-d02b-4273-a9a4-0bd49af14c92/nijoxiwuxibarewuzitonolaz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000986b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986B 5752 bytes
SHA-256: f523eb807b63fc81ea88eaf7c89852024f1d4496ba5b010f9fe73af29b70ac23
font_01_sfnt_off0000ac0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0B 10984 bytes
SHA-256: 175baf73a1ee0a86ebb010f09319b17fd25855d036478fd5cf9854086e549bfa
font_02_sfnt_off0000d186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD186 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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