Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e93ed01f0259d5…

MALICIOUS

PDF

74.8 KB Created: 2021-03-22 13:38:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2218f106d5b887bd7333cfbe4c499a58 SHA-1: 70648fa77119a063bdce91e3b3a95f2ac81ae1d5 SHA-256: e7e93ed01f0259d5aff3b44976729db83ff4da9ea08d78412a8089b127ae56e4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://pelibifir.ru/wix?keyword=thoughts+are+things+bob+proctor+pdf+free+download', is designed to attract users searching for specific content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=thoughts+are+things+bob+proctor+pdf+free+download
    • http://pizetagudagunox.22web.org/68512587509.pdf
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/7238797.pdf
    • https://sirewuri.weebly.com/uploads/1/3/5/2/135298631/dedose.pdf
    • http://romomikas.22web.org/princeton_review_mcat_chemistry.pdf
    • https://lipojiwogim.weebly.com/uploads/1/3/0/7/130776075/sulitaloda_vazeto.pdf
    • https://static.s123-cdn-static.com/uploads/4464522/normal_5fcfa08e97408.pdf
    • https://filekudop.weebly.com/uploads/1/3/4/0/134017403/dikaz.pdf
    • http://fisogik.iblogger.org/63855833630.pdf
    • http://toteganutiv.66ghz.com/sezirifidiku.pdf
    • http://sivadozulov.iblogger.org/13110564839.pdf
    • https://bedexupef.weebly.com/uploads/1/3/0/7/130775630/sudiz-rofewotavogo.pdf
    • https://wuvipovuzodex.weebly.com/uploads/1/3/4/8/134846945/tirekojebazobezekixo.pdf
    • https://jazujopu.weebly.com/uploads/1/3/0/8/130873842/fubotiwovalozofej.pdf
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5fd2892967ad4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_0d3cac696f834206a7b73c5c76c7fc0d.pdf?index=true
    • http://movozenumoz.epizy.com/povuxe.pdf
    • http://wifotuzo.rf.gd/amidon_transform_de_mais_gluten.pdf
    • http://tadezaxe.rf.gd/david_deida_way_of_the_superior_man.pdf
    • https://52cfbdcc-51c1-4e85-ba83-ad74149b4620.filesusr.com/ugd/93d431_eed0ba7f1a7247f28d0899abdffeab37.pdf?index=true
    • https://8c17aa34-c454-4d6c-a218-8929c845e329.filesusr.com/ugd/808cd0_2c8bedc5f2064e359f761464dc6bd340.pdf?index=true
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_64f0fdbe3c4c467d99d9e0eb692ff731.pdf?index=true
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_7c0ef25e81d54eda957cb6396dcb822b.pdf?index=true
    • http://jekuranabuvi.epizy.com/jurnal_akreditasi_rumah_sakit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d72e.bin
9542d354281eb17d2710bb2070dceb74a45fe0610ca17475f876ba2b3d485543
pdf-font-stream PDF embedded font (sfnt) at offset 0xD72E 5480 bytes
font_01_sfnt_off0000e9d5.bin
e2e46c650d2af52f4dc60e83c75b19d540f706d3178e942df0e4bb8c4a879211
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D5 10452 bytes
font_02_sfnt_off00010d76.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D76 4324 bytes