Malicious PDF — malware analysis report

Static analysis result for SHA-256 813558aac3599642…

MALICIOUS

PDF

93.8 KB Created: 2021-03-21 22:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d17ac9377a883378ce7eaae29d5d6636 SHA-1: c04d13e69ae3f7d2bcda2fa85c4c0fa70981e6b4 SHA-256: 813558aac359964202777c8c916dcf901f433c909b956d911bd5cad3dfb267d3
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Weebly-hosted PDFs with seemingly unrelated titles, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jacksth.ru/award?keyword=biblia+de+estudio+inductivo+reina+valera+1960+pdf PDF link annotation
    • https://zofazozudu.weebly.com/uploads/1/3/0/7/130739697/rakukipew.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/9WhdcaX/the_world_of_magic_warrior_farming_guide.pdfIn PDF document text
    • https://gudagomafefaxer.weebly.com/uploads/1/3/4/5/134523608/sajuzezopagetesuwo.pdfIn PDF document text
    • https://tokuniti.weebly.com/uploads/1/3/4/3/134331772/e047dbb85e7cfeb.pdfIn PDF document text
    • https://xoxefalumigak.weebly.com/uploads/1/3/4/5/134527234/8907395.pdfIn PDF document text
    • https://zememaxuzibur.weebly.com/uploads/1/3/5/3/135326459/kijom.pdfIn PDF document text
    • http://canlisohbetim.net/16712869205y0by0.pdfIn PDF document text
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/91bb26fd.pdfIn PDF document text
    • https://jujamepusa.weebly.com/uploads/1/3/2/8/132815903/vijupof.pdfIn PDF document text
    • https://cdn.sqhk.co/muwizavo/jhgfgdJ/sefazuwuroka.pdfIn PDF document text
    • https://mulomaninivoxom.weebly.com/uploads/1/3/1/4/131437045/zitabajitoban.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/8560724.pdfIn PDF document text
    • http://white-x.fun/14813061556l8ofj.pdfIn PDF document text
    • https://fafevidelaxikez.weebly.com/uploads/1/3/4/4/134481631/liwewosa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/68652653047.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/transcription_and_translation_worksheet_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/amsterdam_tourist_guide_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/derogatory_on_credit_report.pdfIn PDF document text
    • http://lexubaxamomaw.rf.gd/maytag_neptune_front_load_washer_drum_bearing_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/kajofimevip.pdfIn PDF document text
    • http://xulivef.rf.gd/geraxadifemo.pdfIn PDF document text
    • http://pasigajixivete.epizy.com/goodnight_moon_goodnight_stars_words.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_off000127dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DD 5904 bytes
SHA-256: 6a4363bfd92e80067751be55a00661ee3df63128301dd1d8e2a3a82ef9d2f474
font_01_sfnt_off00013c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C01 13592 bytes
SHA-256: 2ad495d722f53d71c86fb084a3fbef7f6ae20cce64746342dcd44d2e821afb1d

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