Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0076007f3174537…

MALICIOUS

PDF

73.8 KB Created: 2021-02-13 01:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4637274d72d39c8c412f01695e99d71b SHA-1: 3299f52b0cfd5653980bf99e661b8c28f5ebbb24 SHA-256: a0076007f31745376aa1b53142c541040a63cb060504c779925988f4e1b962c3
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of external URIs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=bear+creek+bullets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456166/normal_5fff3cc36a4cd.pdfIn PDF document text
    • http://dfds.in/788480153356q8lp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_600b44f3901a3.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/Z74idhi/tagolezexisod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468259/normal_601723891c833.pdfIn PDF document text
    • http://smcjd.com/47520382221s16xh.pdfIn PDF document text
    • http://seamanygau.best/adventures_of_huckleberry_finn_testb7vmi.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/fJhdBAR/sejaxubux.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/gjjhdPr/simcity_buildit_cheat_codes_no_survey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5fdbdf3f2b5ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lamekukibudinos.epizy.com/4733925245.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/brother_driver_hl-_2270dw.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/77695518044.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/voxapenavuf.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/waderelezebazalela.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/xijemepikegidetaxaw.pdfIn PDF document text
    • http://disefubukub.rf.gd/86212299611.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/ps2_emulator_for_ios_no_jailbreak.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/65529007887.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/roranarolavomipobujaxug.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/konufipoxukisesawoxigu.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_off0000e550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE550 5044 bytes
SHA-256: 4b69411f5c66b1cdb54801d599ab8a5d5d5885ad3e1e913665f74b60aa351c50
font_01_sfnt_off0000f686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF686 10436 bytes
SHA-256: 05f27fbdd912a55f4495cb4e1110ee4997152e0808f4e1d3c43e1c12394c882c

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