Malicious PDF — malware analysis report

Static analysis result for SHA-256 496c01ff496c130d…

MALICIOUS

PDF

53.5 KB Created: 2020-10-26 14:38:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 83cd2ccec9bc8313170ce9283e014f75 SHA-1: 9cd6ed1e435357f9294ae45b7b06e1011a8bef50 SHA-256: 496c01ff496c130da4db509e1d7cb5eff26de82a1fccc64b505347cd9f85e668
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body also includes a call-to-action phrase, suggesting a phishing or social engineering attempt. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a compromised or malicious site, likely for further exploitation or credential harvesting.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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?keyword=convert+pdf+to+word+best+converter In PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/3067330.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/venemawuj-noxaropuneze-nabadebotisi-susetidor.pdfIn PDF document text
    • https://reredutubonuki.weebly.com/uploads/1/3/0/7/130775370/tonunenozus.pdfIn PDF document text
    • https://gogozugibijom.weebly.com/uploads/1/3/4/3/134369614/libavitupu-zogunejobebokuf.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/ginawaxik-lavazetedebu-talovu-busepotalizunin.pdfIn PDF document text
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/fd665b3.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/zasupozulo.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/3222330.pdfIn PDF document text
    • https://zeruxexo.weebly.com/uploads/1/3/4/3/134373455/74f7983e477ddfa.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/231781.pdfIn PDF document text
    • https://gujibimusexuwub.weebly.com/uploads/1/3/4/0/134042380/xawolutadevabowimiz.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/dezevapiwijufeje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/electronically_controlled_manual_transmission_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3478/6971/files/71334316818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0893/6096/files/merulin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9078/6469/files/civil_engineering_words_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/707788580.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/business_case_analysis_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/brazilian_portuguese_pronunciation.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/arabic_to_english_translation_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/gre_pool_of_argument_topics_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/wepijim.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/zagabesosedixolorur.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_off00008f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F94 5104 bytes
SHA-256: 26585d66c9624f3574f19ea83fa9c52834ed97cfa4a91455d4796bff2324e586
font_01_sfnt_off0000a115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA115 12352 bytes
SHA-256: 5a0bfac15f73aaae146866a2b307b362442fdadc62238c6c0305ebace3eb1fdd

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