Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02a060da6128e66…

MALICIOUS

PDF

85.7 KB Created: 2022-05-30 18:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: c9fc9bf28d81ff2fe38576439dd80b90 SHA-1: 7204216e6c995b2fcc6144fd9faa9c19962100da SHA-256: e02a060da6128e667c9730fa5a6586b3330c49fec987e4fc2f9a57a5fc0b1df4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, such as the one pointing to 'cafij.co.za', suggests a phishing or malware distribution scheme. ClamAV also detected it as Pdf.Phishing.Trojan.

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cafij.co.za/YmrXLWy8?keyword=aha%20acls%20written%20test%20questions%20and%20answers%20sheet%20printable%20version
    • http://dolekkoyum.com/admin/UserFiles/file/18906338076.pdf
    • http://popmetre.com/news/files/xusarediwidigexa.pdf
    • https://tibikinadip.weebly.com/uploads/1/3/1/8/131856726/negom.pdf
    • https://kalodutizifurul.weebly.com/uploads/1/3/4/5/134597908/f81a46b064fc6.pdf
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/sojatenew-loxeki-xisikazaw-zowemumuxale.pdf
    • https://togodinaxudare.weebly.com/uploads/1/3/1/6/131637070/zagepuwekaleba-zoruk.pdf
    • https://wububored.weebly.com/uploads/1/3/4/0/134042895/23ccbd1f.pdf
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1624108d090041---radaxumubuxudide.pdf
    • https://vasutaszeneiskola.hu/ckfinder/userfiles/files/3625624018.pdf
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/dazaperirenijilafonuxupu.pdf
    • https://wexigovepabenu.weebly.com/uploads/1/3/0/7/130738565/695261.pdf
    • https://rovumixonisi.weebly.com/uploads/1/3/4/0/134012407/4377642.pdf
    • https://wodepcb.cn/uploadfiles/files/sarujabesin.pdf
    • https://vapigutu.weebly.com/uploads/1/4/1/3/141352136/5b0a80c.pdf
    • http://checopharma.com/upload/files/59978215535.pdf
    • https://pijolonaponezu.weebly.com/uploads/1/3/4/8/134879261/nunuguribo.pdf
    • https://ctapigroup3.com/contents/files/kiriviwovejaro.pdf
    • https://telefaxukewinet.weebly.com/uploads/1/3/4/3/134320065/nafafit.pdf
    • https://coil.hk/upload/files/movitodemaxijipodogevevik.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1627725fbd6fa1---pelugufogowe.pdf
    • https://jidubolepu.weebly.com/uploads/1/4/1/3/141350099/xovatevazev-jakuzuxajugefin-giseja.pdf
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/c3618e74bf0c.pdf
    • https://polosaguri.weebly.com/uploads/1/4/1/4/141415529/mitugonobovemu.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93a.bin
a72d1c3fef54a03c511584548ea2bf014b097eff26bc4e9285dcb46547a6486e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE93A 17300 bytes
font_01_sfnt_off0001167c.bin
3b87695c89439ec22196b18aed2d0eb010528b323943706c413ca9285808e4c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1167C 11128 bytes
font_02_sfnt_off00013015.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13015 16792 bytes