Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5967e089a94ccb…

MALICIOUS

PDF

82.1 KB Created: 2021-05-23 03:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9abcd0fe149ca7b51ee8dbb2d15ffc10 SHA-1: b0513af37b406c653f5bf58b0e9a9f09260fbc36 SHA-256: 5b5967e089a94ccbb1a184c176f18f7a0650b45353a69b7fc6dc01b3ad6dd260
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many of which point to suspicious Weebly domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to reference a TV show, likely as a lure to encourage clicks on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/strik?utm_term=diya+aur+baati+hum+serial+episode+100 PDF link annotation
    • https://vomuxetajamusu.weebly.com/uploads/1/3/1/8/131857717/komipeb.pdfIn PDF document text
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/tirinewesomiminez.pdfIn PDF document text
    • https://pukaxixuzex.weebly.com/uploads/1/3/4/4/134492253/jinemolepo.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/zimibaxexegelome.pdfIn PDF document text
    • https://rinalodejivew.weebly.com/uploads/1/3/4/3/134383373/3403522.pdfIn PDF document text
    • https://pudixibavumop.weebly.com/uploads/1/3/5/9/135964902/6969018.pdfIn PDF document text
    • https://kasikijafeke.weebly.com/uploads/1/3/1/4/131406722/fatakilo.pdfIn PDF document text
    • https://tivafalaxemi.weebly.com/uploads/1/3/0/7/130775521/18f7d204a568.pdfIn PDF document text
    • https://futinenapol.weebly.com/uploads/1/3/1/4/131438538/311c47d78e4914.pdfIn PDF document text
    • https://negofajosodin.weebly.com/uploads/1/3/5/3/135314147/sonixexeg-tazativ.pdfIn PDF document text
    • https://tekovotobu.weebly.com/uploads/1/3/5/3/135319939/1ed6a.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/kulinisokakewi/beginners_guide_to_game_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d211077c-c00f-4e79-b759-2cfebf6de7dd/wibefilebu.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/38944939608.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/adobe_color_cc_panel.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/asos_uk_size_guide_jeans.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/61029598822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7d8720-cd9a-460d-921c-e3c0c1b3d2bf/kuruserutujovu.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/leraniwutarilafuxulufef.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/nikoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/mimowanuzirexinumegizeku.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/aznavour_la_mamma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7713c22-78e1-4a5a-b308-ad857507423b/dipolow.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/95052573526.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76E 5636 bytes
SHA-256: 8ee861655a7fa56bf12718a6b8ecb8ee19ab8ee8581c64687c6a71271e4cec39
font_01_sfnt_off00010a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6B 1936 bytes
SHA-256: a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301
font_02_sfnt_off000113b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B0 11456 bytes
SHA-256: c2d4bc7952984ce80cdf4f75fc236604976e8b5af8192571f7f614fd2b332e0d

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