Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ee288a20aae677…

MALICIOUS

PDF

85.0 KB Created: 2020-12-18 05:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 38573907766f0d60ec700aa850cc3433 SHA-1: 95127a4ad87b99d28b266ceaf24d1c496df6c107 SHA-256: 04ee288a20aae6779072994a413cbfc2edacac7f6be116bf09fa1e9d1e3a1336
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which point to disposable hosting or known malicious redirectors. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lead users to phishing or malware download sites. The document body appears to be corrupted or obfuscated, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ggtraff.ru/123?utm_term=a+raisin+in+the+sun+worksheet+answers In PDF document text
    • https://katidifivova.weebly.com/uploads/1/3/4/7/134715674/1703421.pdfIn PDF document text
    • https://fupopafesuz.weebly.com/uploads/1/3/4/4/134443157/masaxutapateba_gogad_xijidukuj.pdfIn PDF document text
    • https://vagewojevibo.weebly.com/uploads/1/3/4/8/134873572/pinilojigu.pdfIn PDF document text
    • https://xidoxuzi.weebly.com/uploads/1/3/4/7/134707988/fejoruda-tevosuzezik-vukosesewumo-zolovuxa.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/vojunofe_naloziwuki_kajejopolot.pdfIn PDF document text
    • https://vifedunujaxali.weebly.com/uploads/1/3/4/3/134398483/gewutesazozavezaki.pdfIn PDF document text
    • https://wupuvogobed.weebly.com/uploads/1/3/4/5/134507139/viforexubek_javowumemo.pdfIn PDF document text
    • https://jixivegeparimes.weebly.com/uploads/1/3/4/7/134749144/lulimipotepami-jukubaku-maxowizileda-wowamarov.pdfIn PDF document text
    • https://ropadapolope.weebly.com/uploads/1/3/0/9/130969983/laxevurutofuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4800d4cb-711a-40a8-89c7-49cbe6c303f6/22515247532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8926e4-b9f6-44cd-9866-3a103e8aeb6b/32721468767.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/meilleur_box_android_4k_2019.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_off00011229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11229 4888 bytes
SHA-256: 7c013c3ededbe73380625f89a6d9c6f9f586d8120703cadc1c39151be379aa7a
font_01_sfnt_off000122cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122CF 10784 bytes
SHA-256: 3426fe969938fbe11deabe7214c6535ee1d460ceeb29ce37044def78736be117

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