Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80622f8bba64f00…

MALICIOUS

PDF

34.6 KB Created: 2020-10-25 10:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: eb547a3888951e2a1bca2f1018741840 SHA-1: 19a1ab72496bdc3b02f66d6fc0dbfe85c04a955d SHA-256: c80622f8bba64f0035bb148c2fb4968a73833fca509368a682d0635a9a7f298c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.com/aws?keyword=factores+sociales+que+influyen+en+el+desarrollo+humano+pdf In PDF document text
    • https://zeronifoza.weebly.com/uploads/1/3/4/3/134312515/tufujoduko-lataguxakidumiw.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kanasazizofowire.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/sakufobe.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/tezulemetime_fusikoxot_nojok.pdfIn PDF document text
    • https://tufobedix.weebly.com/uploads/1/3/4/4/134431979/juloxuxedop.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/9584155.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.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/susopuzupure/puxipipusew.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/31939935008.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/gixilawupozexalabop.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/causes_of_sudden_cardiac_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ba1b3b-c5e3-4675-98f5-e7fba51c1332/bobcat_743_parts_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d8e76d-850a-4756-8a54-ca38b9759de0/ilustrao_cientifica_botanica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee05f8a-c9e9-4608-ba5c-0f2950cf928a/64210651916.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_off00004805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4805 5580 bytes
SHA-256: ee695d7b8bcd06562712d1f39e559dde4a9e93bac0e68b5562162efdb0db1a91
font_01_sfnt_off00005ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD6 10004 bytes
SHA-256: 012d4713d8cbd5e7509a7fb09398a40f3ba1c06b6b69986039ab91dc9e07a345

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