Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fcd476f3c1e9c5…

MALICIOUS

PDF

73.3 KB Created: 2021-02-27 21:36:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 933a1f15e1b23e3f313407673873c07c SHA-1: d963e86de9c3a0f9558a20bc9db692dbc25edea6 SHA-256: e0fcd476f3c1e9c5ee987313bbc51a7d4bcabe09e719acd449765becb5040111
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, suggesting it functions as a link farm designed to direct users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://dafemum.ru/aws?utm_term=what+is+the+first+part+of+the+realtor+code+of+ethics In PDF document text
    • https://sisexalixigana.weebly.com/uploads/1/3/5/3/135323773/1975964.pdfIn PDF document text
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/mapogukutikav-jonut-samowofigus-pexolezikosumaw.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/badexusezuwiwuk-kekegovunet-linakuvujadagul-pupapupixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_601368f3d2636.pdfIn PDF document text
    • https://jigibomafife.weebly.com/uploads/1/3/0/7/130738667/watoj.pdfIn PDF document text
    • https://tapizijivuvol.weebly.com/uploads/1/3/2/6/132696465/4ee7334ea25.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/36644184589.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/vipinib/xaroje.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/xivirokoka.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/amarnath_yatra_mp4_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/lewis_formel_ammoniak_rumliche_struktur.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/jerunax.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/99027186999.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/chello_divas_2_movies.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_off0000e1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AF 5256 bytes
SHA-256: 89900fc66c653a77a18c219afef3b9d3f0d3deefe2578958480210b756770ec3
font_01_sfnt_off0000f397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF397 10728 bytes
SHA-256: b08062d99496e8e8809ff98163deab216891b5ba304d9698a30d141822bd069e

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