Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed78cdc17b454dd6…

MALICIOUS

PDF

54.1 KB Created: 2020-03-24 03:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 060fc804a628978bc5cab90d0e2d14d0 SHA-1: 7dd42ecb4624a66df2046719bead3de77b2b8317 SHA-256: ed78cdc17b454dd68bd466e777704885cc3cbd3b198b1469f99699e886bc69a0
96 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a coordinated effort to drive traffic to potentially harmful destinations.

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://malamamentoring.org/uploads/1/3/0/8/130814172/130814172.html#in+the+metabolism+of+amino+acids+for+energy+the+amine+group+is+quizlet PDF link annotation
    • http://lapalomafamilyservices.org/uploads/1/3/0/6/130620283/7237996.pdfIn PDF document text
    • http://www.lorilearnardart.com/uploads/1/3/0/4/130483074/3864041.pdfIn PDF document text
    • http://germanverb.com/uploads/1/3/0/6/130639348/9bb17c.pdfIn PDF document text
    • http://omscloud.eu/uploads/1/3/0/3/130313021/lupubozavixejuzil.pdfIn PDF document text
    • http://a-66-96-142-51.isabellabolster.com/uploads/1/3/0/7/130739793/bugaxawavuv.pdfIn PDF document text
    • http://greenjuicegroupclient.com/uploads/1/3/0/5/130545895/nikozo.pdfIn PDF document text
    • http://elmenhorster-metallbau.de/uploads/1/3/0/6/130639808/vufawozatuzu.pdfIn PDF document text
    • http://hailifangyulecheng.br3h.com/uploads/1/3/0/5/130590351/31d0e7752ae8.pdfIn PDF document text
    • http://monicabroussard.net/uploads/1/3/0/6/130621840/vipama.pdfIn PDF document text
    • http://hashaldi.store/uploads/1/3/0/7/130739814/fuzipagumepu-zakomijufijo-lagobefenul-poforiw.pdfIn PDF document text
    • http://integratedlandscapes.net/uploads/1/3/0/2/130271078/najax.pdfIn PDF document text
    • http://brightstarbakingcompany.com/uploads/1/3/0/8/130814861/zizosabigilo.pdfIn PDF document text
    • http://mta-sts.panerioklinika.lt/uploads/1/3/0/6/130605244/kegujafibos-joratizufu.pdfIn PDF document text
    • http://webdisk.learnjapanesewell.com/uploads/1/3/1/0/131070826/wegarafutuvosur_wenuvapaxatase_fukaduvibedibi.pdfIn PDF document text
    • http://food.work/uploads/1/3/0/6/130605135/1617210.pdfIn PDF document text
    • http://wizstapandtunes.com/uploads/1/3/0/6/130620952/kigazujepipi.pdfIn PDF document text
    • http://www.hrestor.com/uploads/1/3/0/6/130604243/junofofowuxamo.pdfIn PDF document text
    • http://abortionkuwait.com/uploads/1/3/0/7/130739669/575029.pdfIn PDF document text
    • http://pressplayhampshire.com/uploads/1/3/0/7/130775516/zasunibuwiriwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C65 8796 bytes
SHA-256: 629b3e4c59dc62146159c88e1f7d2b50fb1366b2e25d66be884211e161726df5
font_01_sfnt_off0000bde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE4 3368 bytes
SHA-256: 2b75d1bb269599877f2e3f52e3165b236df04da0f5924f9263c30cdbfe4986e3

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