Malicious PDF — malware analysis report

Static analysis result for SHA-256 1353d990a802a624…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 04:37:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8d362cbc9b2bb772fd0c3c5a23b9f546 SHA-1: aa742011ba1d31c2b9cb9db87fabcb9df4a9f4bb SHA-256: 1353d990a802a6246ba3150dcdd68301fbb18f3f6a54d15f3d1d7dac929c8af6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://druttle.ru/wix?keyword=summoners+war+farming+guild PDF link annotation
    • https://wafiludelo.weebly.com/uploads/1/3/1/4/131437380/8477026.pdfIn PDF document text
    • http://medyahanem.com/ketok60vyy.pdfIn PDF document text
    • http://komujevakikumu.22web.org/57147207639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_6016d2601281b.pdfIn PDF document text
    • https://bomoturu.weebly.com/uploads/1/3/1/3/131384468/loxikejonegubij.pdfIn PDF document text
    • https://ligegumipiwefu.weebly.com/uploads/1/3/3/9/133999845/4491495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381090/normal_5ff5189767c35.pdfIn PDF document text
    • http://vorgazme.com/create_logo_app_for_androidi91kv.pdfIn PDF document text
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/mofowepex_makuti_wevujufesiluwek_tovomejisoxipu.pdfIn PDF document text
    • https://nujetamewude.weebly.com/uploads/1/3/4/8/134881912/kaviruwisos.pdfIn PDF document text
    • http://trellos.fun/achyutam_keshavam_bhajan_song_freel882g.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/6114703.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://giduwenodi.epizy.com/43337098153.pdfIn PDF document text
    • http://suzefomon.rf.gd/pivuwilodug.pdfIn PDF document text
    • http://zekubegem.epizy.com/gimok.pdfIn PDF document text
    • http://xivobotaxonid.epizy.com/life_after_death_free.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_off0000cb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6F 5420 bytes
SHA-256: 3a8bbc7ee45cdfb76aec9d6b4570e4c271fcb34044ff7b42601c5a605e643105
font_01_sfnt_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 10264 bytes
SHA-256: 6174d2ed05b8441572d2be214e0aa9e1df53540c0212261a496942c4aacb6a96