Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e54ce9e9c82fa81…

MALICIOUS

PDF

91.6 KB Created: 2020-03-06 15:57:16 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: d9d10814387413948d921fd56f8fe806 SHA-1: 7f1566aed1a590d6dbe11bacb9947fd9cc66efb8 SHA-256: 2e54ce9e9c82fa81dd93777718278b458028f9670ff2f9fbc6ab5b73f3450af3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a sports-related topic, likely a lure. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the extensive link farm suggests a redirection or SEO poisoning attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://8uaw3.bpmtc.com/uploads/1/3/0/2/130289242/130289242.html#2019+african+cup+of+nations+round+of+16+fixtures PDF link annotation
    • http://hollyshoppers.com/uploads/1/3/0/6/130639313/fivuduluketugemef.pdfIn PDF document text
    • http://naturalbalancetherapies.org/uploads/1/3/0/4/130483243/08b0603e.pdfIn PDF document text
    • http://capitolhillclubmembers.com/uploads/1/3/0/6/130604521/4350504.pdfIn PDF document text
    • http://mail.thefrontpaige.com/uploads/1/3/0/2/130289214/bbdb34def3f1.pdfIn PDF document text
    • http://dollarforacause.org/uploads/1/3/0/6/130604111/lojerefemawaji-luxaponebax.pdfIn PDF document text
    • http://modern-bliss.net/uploads/1/3/0/3/130312920/gopoxev-fepejozafe-rodoremori.pdfIn PDF document text
    • http://sakislowe.com/uploads/1/3/0/3/130379138/9727503.pdfIn PDF document text
    • http://nomoremondays.us/uploads/1/3/0/5/130550940/mawipusogo.pdfIn PDF document text
    • http://mta-sts.mx.iammonline.net/uploads/1/3/0/7/130776213/xedukadav.pdfIn PDF document text
    • http://doodadsandwhatnots.com/uploads/1/3/0/4/130435857/c1a6c66b8764601.pdfIn PDF document text
    • http://www.ericaleejumps.com/uploads/1/3/0/4/130435937/zemilifogojanasepate.pdfIn PDF document text
    • http://murdock4senate.com/uploads/1/3/0/5/130542940/wefifudufabag_gikidimole.pdfIn PDF document text
    • http://tinyzootravels.com/uploads/1/3/0/6/130639691/bogufesabomowop.pdfIn PDF document text
    • http://nikkimercerdesign.com/uploads/1/3/0/7/130740591/9241341.pdfIn PDF document text
    • http://vivianpianomusic.com/uploads/1/3/0/2/130291624/lutupogidize.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10519 6728 bytes
SHA-256: 5278024270de67705d3a5034a26ce2f5e1d9e53f50705cc770b2190155f81e7b
font_01_sfnt_off000115bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115BC 9836 bytes
SHA-256: 70807529789625e2628b81f67bb90615bed19987ebfaab744bdbf7d2c68465b4
font_02_sfnt_off000139c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139C7 4376 bytes
SHA-256: 68ddc89927c5aa10c07b450bea948f6f4b6878cddcbccc95d1dba0579962c08a
font_03_sfnt_off000147b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147B0 16764 bytes
SHA-256: e90fe182e7c4b437209217cdecfdd9dcabb42aed34a10c41f0d624343bdf854e

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