Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14b92cdad63e1f1…

MALICIOUS

PDF

80.8 KB Created: 2021-01-25 20:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7425f8d32f406d381e239303d0513446 SHA-1: c2f53e0e21cc3766c1bec05e08372b1e0a5a56fd SHA-256: f14b92cdad63e1f1bfba0cfafccb286f059df104c18e9babed9d5eafdf06cfbd
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded URL is likely intended to lead the user to a phishing site or a download for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://yafferge.ru/aws?utm_term=panini+kabob+grill+menu+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408321/normal_5fce54fb7a3f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415745/normal_5ff4e2459622d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464521/normal_5fccbfbeabd49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401732/normal_5ffd8664a0d89.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/puwutafele.pdfIn PDF document text
    • http://juzajikadig.22web.org/vokovix.pdfIn PDF document text
    • http://doxugivo.22web.org/sepajumokemilolutuvufod.pdfIn PDF document text
    • http://www.opentle.orgIn 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/napoledunadigo/miwegobabifiwipeve.pdfIn PDF document text
    • http://badememaveg.rf.gd/sheetrock_knife_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/ableton_live_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/9395209984.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/avarampoo_tamil_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/jobs_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/bichhoo_movie_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/canadian_food_guide_2019_cbc.pdfIn PDF document text
    • http://kugofabafomozo.epizy.com/31685934548.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/christian_worship_songs_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/93073530802.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/mivapaf.pdfIn PDF document text
    • http://faxanudof.epizy.com/vafuborerabemo.pdfIn PDF document text
    • http://bedawisanono.epizy.com/android_9_na_mate_10_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/sijanovojezerapapogaj.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000e246.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE246 11432 bytes
SHA-256: 2a5b68ba02e8b9d8e85507c40f649a396cfa5dabe70f150f20e47252430f7500
font_00_sfnt_off0000d0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D4 5192 bytes
SHA-256: 403bcf56805735e61be12426765eedc1859fda3b22062eae869542d0d7465cc3
font_02_sfnt_off000102ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AB 10720 bytes
SHA-256: 5feaad308698d57edabe5584924bb2232777cdfc08afc63424cbc7d621827a03
font_03_sfnt_off00012789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12789 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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