Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2d2507b7c0db8c…

MALICIOUS

PDF

117.6 KB Created: 2021-03-29 20:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 515cc0f61f5abf9ac42f1f96700be938 SHA-1: 363ac993c5fa80a870c3de8bb6a362de806c0f26 SHA-256: cd2d2507b7c0db8c50a6975c89ad8b09be2985cc5c2740af73644bda0e39cee3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating the presence of external URIs. The document body, though partially corrupted, suggests a lure related to a 'Sony handycam manual'. The embedded URL `https://druttle.ru/wix?keyword=sony+handycam+dcr-sr68+manual` is likely used for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure and heuristics point towards a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=sony+handycam+dcr-sr68+manual PDF link annotation
    • http://sopugepibimel.mypressonline.com/james_patterson_michael_bennett_book_12.pdfIn PDF document text
    • http://pumaguli.scienceontheweb.net/janadinufebogekanuxana.pdfIn PDF document text
    • http://jakusavu.sportsontheweb.net/tujudom.pdfIn PDF document text
    • http://xoguvux.22web.org/what_is_the_purposes_of_creative_and_technical_writing.pdfIn PDF document text
    • http://kelimap.mywebcommunity.org/36402559961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426541/normal_60121a02351f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485699/normal_603f53ce3d5f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458148/normal_5fff0e58cb315.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/wuxupewu/vuvepikesaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373016c3-d3f2-4177-af58-c1d9354a35de/tabela_das_integrais_imediatas.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/98011180207.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/goodwill_pricing_guide_for_donations.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/16702366111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eab053b-0db8-4fc9-baf9-6e84fcba318d/subway_surf_apk_indir_para_hilesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6925e916-107a-4974-8eba-606f551e52d1/muwadurimukojafa.pdfIn PDF document text
    • http://tifoxirekurox.epizy.com/20082307788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8899686-4810-43a8-acdc-68e1e5b9a3c1/bananojiregubesupa.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/1795644007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47feb67f-bad8-49ec-bbd7-452cc0a37ec1/the_shack_movie_free_mp4_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e45dd3d4-a3bd-4454-b2df-bfc741609758/adverb_of_frequency_examples_list_sentences.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_off00018bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18BFC 5764 bytes
SHA-256: 37d3bcf736254176ed4f286324fd8ef9b150695807375ce7815ae10458b1b6ed
font_01_sfnt_off00019f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F7B 12620 bytes
SHA-256: 0aeab24d7fec3a5a3c11a72b178f15e7fa4426b22befa6933b7c520e6cdbda51

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