Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e336b08c05aadbb…

MALICIOUS

PDF

71.6 KB Created: 2021-03-31 18:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 124468750cead9d0a9eda42218f51ec8 SHA-1: 891c92562190d18568bd1d3ddc7d7bafe075d2d1 SHA-256: 5e336b08c05aadbb7a10af265560d45a952e64b2a3d2e17ce28f1afa4dbb5cd5
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The document contains a mass of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. One of the embedded URIs, 'https://leonvi.ru/wix?keyword=iphone+owners+manual', indicates a lure related to iPhone manuals, likely to trick users into clicking through to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://leonvi.ru/wix?keyword=iphone+owners+manual PDF link annotation
    • https://sejumajofejopib.weebly.com/uploads/1/3/2/7/132740214/likeba_dofonukinut_safexokagodiwiw_tuxafotax.pdfIn PDF document text
    • https://ketafimevudo.weebly.com/uploads/1/3/1/6/131637081/ripidovatumukuvidad.pdfIn PDF document text
    • https://jumomemokipus.weebly.com/uploads/1/3/0/8/130874307/punofoterop_lizikomedet_kenawozo_gerobo.pdfIn PDF document text
    • https://zezigejuto.weebly.com/uploads/1/3/5/3/135318470/fobexuvi-fifenajulej-lumigenikeve-bexon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377380/normal_600127b4f40e2.pdfIn PDF document text
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/zezodudufamof.pdfIn PDF document text
    • https://fadapezak.weebly.com/uploads/1/3/0/7/130775088/6351561.pdfIn PDF document text
    • http://sagokorize.22web.org/10707512594.pdfIn PDF document text
    • https://lozorodarefela.weebly.com/uploads/1/3/2/6/132681783/litoripelubir-figewe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_604024096369c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_6022c2e06baed.pdfIn PDF document text
    • https://zoladikadaxupaj.weebly.com/uploads/1/3/4/6/134635808/5246969.pdfIn PDF document text
    • https://sowozulame.weebly.com/uploads/1/3/4/7/134733070/1b2fad513296fce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zewomasajeguzud.epizy.com/an_occurrence_at_owl_creek_bridge_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/84532667712.pdfIn PDF document text
    • http://nuxidowu.epizy.com/fevixotiwolizabegix.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/how_much_storage_does_xfinity_dvr_have.pdfIn PDF document text
    • http://punemipira.epizy.com/franchise_operations_manual_template.pdfIn PDF document text
    • http://babijegogaluz.epizy.com/73519513989.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/criminal_justice_reform_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/lights_out_2013_full_movie_download_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/media_player_classic_free_64_bit.pdfIn PDF document text
    • http://fivulesesixiji.epizy.com/33164430100.pdfIn PDF document text
    • http://pulawev.epizy.com/61382550261.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_off0000db9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9E 5088 bytes
SHA-256: 8fa94e33074c4393e8151085b982251e8766d83e2568ac5dcbf47199f66e5c36
font_01_sfnt_off0000ecca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCA 10748 bytes
SHA-256: f8cb8b97567f122f6d68f75cc0f43ab24944a77e73caf2855206affd3cfdd9a5