Malicious PDF — malware analysis report

Static analysis result for SHA-256 732256bd3e7a1799…

MALICIOUS

PDF

148.4 KB Created: 2021-05-09 10:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 620c5a6fbbbc43c1565789622de8449e SHA-1: 57619890d7782a15f0ec13d431ff60f7947af3f2 SHA-256: 732256bd3e7a179941fc882a1e65ac5635fb287a5c433981bbd03de44c4630ae
66 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the sheer volume and nature of the links suggest an attempt to drive traffic to potentially malicious or deceptive content, possibly for SEO manipulation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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://nipisod.ru/strik?utm_term=pokemon+black+2+walkthrough+gamefaqs PDF link annotation
    • https://forugizatufuru.weebly.com/uploads/1/3/1/4/131410167/7564072.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/pubudapaxo.pdfIn PDF document text
    • http://dejivuxa.mygamesonline.org/biology_book_for_class_12_up_board.pdfIn PDF document text
    • http://reawolt.online/wukufogetakotesimilexyidpq.pdfIn PDF document text
    • http://uscreditinquiry.info/whirlpool_ultimate_care_ii_sizep2qow.pdfIn PDF document text
    • http://italiahot.space/vizio_sb3821-c6_best_buy9uqyp.pdfIn PDF document text
    • https://wanuzixa.weebly.com/uploads/1/3/1/4/131482886/gorasugamud-nibajakanidoz-getiku-nelivevaxabizu.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/how_to_shut_off_ice_maker_on_frigidaire_gallery.pdfIn PDF document text
    • http://afracheat7.xyz/xunujejotuzemevetz42by.pdfIn PDF document text
    • https://jejepijukutu.weebly.com/uploads/1/3/4/1/134131362/darigofuxupi-galod.pdfIn PDF document text
    • http://wonder-ita.space/how_to_change_the_air_filter_on_a_craftsman_leaf_blower8rdep.pdfIn PDF document text
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/zuxuva.pdfIn PDF document text
    • http://slimerecipe.org/doteruxowedegidojumev20iwk.pdfIn PDF document text
    • http://kinoogf.space/beethoven_sonata_14vagrx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/allahu_akbar_endru_muzhangum_song.pdfIn PDF document text
    • https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_918476ed51104ae4928b115dd4602cb5.pdf?index=trueIn PDF document text
    • https://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_06252c3c36d64e25befbd4ed3afb5bce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/89318613738.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/fejugibasavovobuwif.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_08f29026e92448e4950a7325d2c26587.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widuxade/mulezeduzabujageti.pdfIn PDF document text
    • http://duvodix.myartsonline.com/gokip.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16634 48224 bytes
SHA-256: 941e3a754a31e0fa7555248a8a869fc22539407786d8b76b0190850808d6e0c0
font_01_sfnt_off0001f952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F952 5684 bytes
SHA-256: ebc2be19216361639e51043369c562f02d34697da4a43b59a1ba8e676ac8e1e8
font_02_sfnt_off00020c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20C93 12316 bytes
SHA-256: cfb54136ece7bc9aa24775cf61dba28900e180fd9bc97f1cc7c016e65e7439fc
font_03_sfnt_off000235bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x235BB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.