Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabc9d461e04aedd…

MALICIOUS

PDF

78.7 KB Created: 2021-02-14 14:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9f711c1f5418a18c8fdb0227c27f91c8 SHA-1: 293ddc20dd8a8b8e3d90a693cc85ff6981af998b SHA-256: fabc9d461e04aedd24038362ce9fa431c967b22fbc8ecb6972f307f7314bd1ed
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The presence of a 'download' button lure and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a malicious intent to trick users into downloading further malware or visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=shareit+download+apkpure PDF link annotation
    • https://cdn.sqhk.co/nulogoxeja/oZhefLz/3351319764.pdfIn PDF document text
    • https://xumodaniteged.weebly.com/uploads/1/3/4/4/134480563/f8333bae1.pdfIn PDF document text
    • https://semirenuzunep.weebly.com/uploads/1/3/5/3/135325284/kuxebo-butanogo-kopikatewoti-watex.pdfIn PDF document text
    • https://ridogorizaloliv.weebly.com/uploads/1/3/4/5/134527302/kigeduwagu.pdfIn PDF document text
    • http://civiliscmq.online/wings_of_fire_book_154tc61.pdfIn PDF document text
    • https://zeruposizagaki.weebly.com/uploads/1/3/4/8/134854722/6662196.pdfIn PDF document text
    • http://dobomasinuraz.iblogger.org/73792334191.pdfIn PDF document text
    • https://cdn.sqhk.co/bapulofuw/Hhbhbji/momepavododat.pdfIn PDF document text
    • https://wufovepujiz.weebly.com/uploads/1/3/0/7/130775368/b2385.pdfIn PDF document text
    • http://kushtanash.ru/platicas_de_seguridad_industrial_20183u5qu.pdfIn PDF document text
    • http://dogopanasukodum.22web.org/lipumuzisam.pdfIn PDF document text
    • https://vokubopupabilu.weebly.com/uploads/1/3/4/6/134691430/516d1426.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/aristophanes_assemblywomen.pdfIn PDF document text
    • https://nitevafatuva.weebly.com/uploads/1/3/4/8/134872456/dfccb1d923.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA04 2952 bytes
SHA-256: 6f6c5a8fb5e62cfd2b6ff76f758e0f05a98695d5bac735cd019a42cb5e5649ba
font_01_sfnt_off0000d491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD491 5008 bytes
SHA-256: f00064c0a06eedfc4ade16d41176547f818f559445ce804895ab45f97cff826c
font_02_sfnt_off0000e59c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59C 10620 bytes
SHA-256: 9b5f95a765502059e4da48c6bf9d591a36829e7b62b20c461b44705138fd9637
font_03_sfnt_off00010a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A44 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449
font_04_sfnt_off00011f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F73 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71