Malicious PDF — malware analysis report

Static analysis result for SHA-256 9584a6097b0f5fd9…

MALICIOUS

PDF

72.9 KB Created: 2021-03-14 10:10:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f619a16ff868cc325deca16900c5a7a SHA-1: e5a4ee21fc7023a471e29b46732b90b8da649216 SHA-256: 9584a6097b0f5fd949cbf2295ebc21d5bf433e316efac3f927d428b1d20cd4e9
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to 'https://xezojetit.ru/wix?keyword=caliper+guide+pin+grease', which is a common lure for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=caliper+guide+pin+grease
    • http://ratubave.22web.org/givunaxofakololirijunopol.pdf
    • http://jiwafuwik.22web.org/cengage_chemistry_class_10.pdf
    • https://cdn.sqhk.co/zezetemirag/ieZAjhp/92081142546.pdf
    • http://jufawet.iblogger.org/ac_market_app_for_iphone.pdf
    • http://ru-1.casa/what_is_the_deeper_meaning_of_romeo_and_juliet5sh12.pdf
    • https://static.s123-cdn-static.com/uploads/4474752/normal_5feb744526c1d.pdf
    • https://cdn-cms.f-static.net/uploads/4386334/normal_6009f1a624253.pdf
    • https://cdn.sqhk.co/vosizijanad/c8jdMS2/backuptrans_android_iphone_line_transfer_full.pdf
    • http://natlegend.space/72643036279m46fw.pdf
    • https://cdn-cms.f-static.net/uploads/4379970/normal_603996c231ddb.pdf
    • https://static.s123-cdn-static.com/uploads/4421477/normal_5fef3494a052c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wiwuxot/bijixitobilize.pdf
    • https://s3.amazonaws.com/xiwevitox/american_psychiatric_association_guidelines_bipolar_disorder.pdf
    • https://s3.amazonaws.com/meludav/chugach_powder_guides_store.pdf
    • https://s3.amazonaws.com/fajixe/canon_mg3120_scanner.pdf
    • https://s3.amazonaws.com/setaxilitozuko/dosajomudaporub.pdf
    • https://s3.amazonaws.com/bogeguva/76522224146.pdf
    • http://joxumokuri.epizy.com/pwc_inventory_guide.pdf
    • https://s3.amazonaws.com/xeropizuwe/buduwodutikanabitip.pdf
    • https://s3.amazonaws.com/wibadinavosunom/android_fragment_lifecycle_onviewcreated.pdf
    • http://sakolizel.rf.gd/15158125408.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e27c.bin
cc9345aae0dbb61143b4d8a0f6f485867dc51fd12eebe9336c2f347107af98f9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE27C 5032 bytes
font_01_sfnt_off0000f3a4.bin
385f90299188749fe10aa9623866a6760b84d4a6039bab35a15c9272efb39bb7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A4 10128 bytes