Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a615952bf7e9ca…

MALICIOUS

PDF

72.1 KB Created: 2021-03-01 15:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 292d2903d6cfc7438de2023aeccb2462 SHA-1: 7f67513091f15271603093bf32bcb421877d8312 SHA-256: 47a615952bf7e9ca4e0ad24dc24851189c9c76fd2518ff264ea40000e98fb14e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The presence of embedded links suggests an attempt to redirect the user to malicious sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=first+aid+step+1+2021+pdf+reddit PDF link annotation
    • https://penoruzeni.weebly.com/uploads/1/3/4/1/134132400/telelevusodemil.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/geKjfAO/cartoon_wars_part_2_script.pdfIn PDF document text
    • https://voxonororipesap.weebly.com/uploads/1/3/5/3/135383222/3941540.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/8375259.pdfIn PDF document text
    • http://nominasacra.ru/sharp_aquos_quattron_70_inch_priceo6irq.pdfIn PDF document text
    • http://sodaapp.club/ozymandias_analysis_breaking_badrhhy1.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/jfgjjbl/48131124845.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5ffd525e156e5.pdfIn PDF document text
    • https://fafidapumexeri.weebly.com/uploads/1/3/1/4/131437561/1859939.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/e7ifVgi/85947778461.pdfIn PDF document text
    • http://avtovishki-msk.ru/how_to_use_ellipses_with_a_question_markuf8j9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5ffab5ae82df6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_602d414be333e.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/litunux/26903302249.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/a_million_years_ago_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/vevade.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/75253814277.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/lepudimifewojufuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/south_carolina_drivers_manual_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/40764126298.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_off0000ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED9 5284 bytes
SHA-256: e6a60cfad0560493723639d97be9ac53146e7c301520ad82c9f63c838b11abf7
font_01_sfnt_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 10024 bytes
SHA-256: c4cd6ef77cb18812c82ecdc3b95c675968a25b0a77b7b20ce16775d20da64d18

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