Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9c0fe1e6110761…

MALICIOUS

PDF

81.1 KB Created: 2021-02-16 03:58:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0c57dd9f1f5b09d2dc9a95c99a3a12b5 SHA-1: c41ddef04b0b1f50c660edc9ee349e0d08e962e2 SHA-256: cc9c0fe1e611076199fc21deeb376d9f4af233bb92e2835bd0508621fc59622e
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple external URIs, with a prominent one being 'https://jottigo.ru/strik?utm_term=movie+maker+para+windows+10+32+bits', which is presented as a download link. The PDF also uses a link farm on disposable hosting, further suggesting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/strik?utm_term=movie+maker+para+windows+10+32+bits PDF link annotation
    • https://cdn.sqhk.co/napumefu/ibnifgc/freeze_pumpkin_pie_baked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469105/normal_601cd326f3888.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495841/normal_6005e6bc9e828.pdfIn PDF document text
    • http://xepomujix.22web.org/army_gunnery_score_sheet.pdfIn PDF document text
    • https://totamozosapopa.weebly.com/uploads/1/3/4/7/134712517/6814774.pdfIn PDF document text
    • https://ribiridoxa.weebly.com/uploads/1/3/0/8/130874248/42b3ffb642.pdfIn PDF document text
    • https://boliwarabinobe.weebly.com/uploads/1/3/1/4/131437394/nuzibomijiv_fimonuniteduxo_pajulebuxul_falasexojuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483338/normal_600ee68f52117.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466996/normal_5ff8659144ff2.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xapota/55074768901.pdfIn PDF document text
    • http://wijinap.rf.gd/pesexufisumolimobud.pdfIn PDF document text
    • http://ditufadupogeju.epizy.com/vapofasumeruxofizofuwipux.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/nice_guidelines_anxiety_adults.pdfIn PDF document text
    • http://moliposapivar.epizy.com/overleaf_creating_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/rooter_android_9_pie.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E4 1604 bytes
SHA-256: 565e99d64711d6a9d59e14760bea8d85aa0dcd6973454cc7c2ff7caa52474b5f
font_01_sfnt_off0000e906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE906 5924 bytes
SHA-256: 9136efe3c7896486817776cb94963adb170ab4fe9e55a6fd8a54296d21ce7f65
font_02_sfnt_off0000fd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD36 10364 bytes
SHA-256: af45878b8b6443059d6ac3f8fd40ffe95d1cbd24986d9e5231a541b07fff98ea
font_03_sfnt_off00012109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12109 16204 bytes
SHA-256: a109d5cc1a8599929bd7702a943337bd153faf2776ff4e30ac39a15e38c17cef

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