Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7265d90fddc901…

MALICIOUS

PDF

83.2 KB Created: 2021-05-10 05:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d0d8b8c30247c729f2eb13dd2662d858 SHA-1: 095f9ab71f06e51c23990d9c37004f7c67ca3534 SHA-256: 7e7265d90fddc901d10f1bdc8752b063fdf7f01c72fb94ed3fed933fcc2eedf2
186 Risk Score

Malware Insights

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

This PDF document was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://seumenha.ru/strik?utm_term=i+am+that+pdf+nisargadatta+maharaj PDF link annotation
    • https://lemuvizavo.weebly.com/uploads/1/3/2/6/132682731/9168125.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/btjdtqx/fiwani.pdfIn PDF document text
    • https://gotenalonas.weebly.com/uploads/1/3/4/3/134372716/jebalelegolibuxekaji.pdfIn PDF document text
    • https://bulobazopikiju.weebly.com/uploads/1/3/0/7/130776241/7631366.pdfIn PDF document text
    • http://rodsfish.club/53875798830cycpc.pdfIn PDF document text
    • http://sabukapu.22web.org/tidusofawa.pdfIn PDF document text
    • https://xefakiradu.weebly.com/uploads/1/3/1/8/131856624/1478334.pdfIn PDF document text
    • https://lisewaduw.weebly.com/uploads/1/3/4/3/134358893/12e1ed7e772.pdfIn PDF document text
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/138255.pdfIn PDF document text
    • https://pamigewome.weebly.com/uploads/1/3/4/6/134631685/zavemamodorarivojuvu.pdfIn PDF document text
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/817b8e1ac234.pdfIn PDF document text
    • http://tikejasoja.22web.org/breadman_tr440c_manual.pdfIn PDF document text
    • https://vamotavobepud.weebly.com/uploads/1/3/1/4/131438348/4820988.pdfIn PDF document text
    • https://dezuvamugofa.weebly.com/uploads/1/3/4/1/134131805/e78f68.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/1VifTic/cat_running_fast_meme.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/c416dab2e71f31.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/macys_bed_sheets_king_sizeovr5w.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/heChKgd/rabumifoxanazakedakiduli.pdfIn PDF document text
    • https://gepinizidewepi.weebly.com/uploads/1/3/4/3/134305752/sazil.pdfIn PDF document text
    • http://xitnet.fun/497396943379ie69.pdfIn 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
    • 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_off0000e735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE735 4996 bytes
SHA-256: 7fc351f1f41e6a2c43904307f1fa431db24a058e7f2abf6e9584fa8825da3762
font_01_sfnt_off0000f7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FD 10616 bytes
SHA-256: c2ec64600d860ab3a45c2a865a102439043fa92da6d24dbeb81dd74e2e25d7af
font_02_sfnt_off00011c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C91 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off000131bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BF 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333