Malicious PDF — malware analysis report

Static analysis result for SHA-256 9679abe3427b3222…

MALICIOUS

PDF

79.8 KB Created: 2020-03-09 14:04:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: d0e5a9bdf33206d2d96e740328c37c7c SHA-1: c228d9b8350ba20ef59e8478e28793a7b74e4ae0 SHA-256: 9679abe3427b322217e98eb017463d97050e3320bc62fc004274ef7d648313ae
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://saranlpcoach.com/uploads/1/3/0/6/130639777/130639777.html#ayatul+kursi+pdf+file PDF link annotation
    • http://centrobibliconazareth.com/uploads/1/3/0/6/130604757/5415445.pdfIn PDF document text
    • http://benpowellconstruction-arkansas.com/uploads/1/3/0/3/130379370/dc4977e.pdfIn PDF document text
    • http://www.wcaonlinepd.com/uploads/1/3/0/8/130874015/6886276.pdfIn PDF document text
    • http://reneesgray.com/uploads/1/3/0/4/130492229/kalulemab_jeteru.pdfIn PDF document text
    • http://mta-sts.thepeachcity.com/uploads/1/3/0/8/130873708/likigekegodote.pdfIn PDF document text
    • http://nndc-india-foundation.com/uploads/1/3/0/2/130272892/vitatobovami.pdfIn PDF document text
    • http://authenticaudiopodcast.com/uploads/1/3/0/8/130873807/db0be.pdfIn PDF document text
    • http://ignitetalentshow.com/uploads/1/3/0/4/130436282/8465668.pdfIn PDF document text
    • http://healthsubstancesbuse.com/uploads/1/3/0/7/130740393/bejupazeduv.pdfIn PDF document text
    • http://southernheritagenewsletter.com/uploads/1/3/0/3/130323421/vilozog_xizuvorufiw_wulaxuwutemejis_xuzatajuva.pdfIn PDF document text
    • http://polebarnstudio.com/uploads/1/3/0/8/130813510/4917126.pdfIn PDF document text
    • http://coastlinecomputercare.com/uploads/1/3/0/4/130489090/rifafurezivul.pdfIn PDF document text
    • http://friendsofhollinhills.com/uploads/1/3/0/7/130739268/3779446.pdfIn PDF document text
    • http://babymoontrips.com/uploads/1/3/0/2/130289797/89387c4dcaf54.pdfIn PDF document text
    • http://bergerondodgechryslerjeep.com/uploads/1/3/0/2/130289745/2f10563a475c193.pdfIn PDF document text
    • http://digital-citizenship-awarness.com/uploads/1/3/0/2/130272580/xodolubabovat.pdfIn PDF document text
    • http://startup-crypto.com/uploads/1/3/0/4/130489265/suvudaguraxidiwor.pdfIn PDF document text
    • http://laurendeckercontralto.com/uploads/1/3/0/5/130590265/maworukodatare-zibepolamof.pdfIn PDF document text
    • http://honeypuddle.co.uk/uploads/1/3/0/3/130323532/vijadojedusuga.pdfIn PDF document text
    • http://brincolindo.com/uploads/1/3/0/7/130738882/kowipufuliramivu.pdfIn PDF document text
    • http://bradleysteelbuilding.com/uploads/1/3/0/7/130776444/7540647.pdfIn PDF document text
    • http://hostmaster.semipermanentmakeupacademy.com/uploads/1/3/0/2/130271137/cbf015ea9ebe884.pdfIn PDF document text
    • http://webdisk.a-r-a.org/uploads/1/3/0/7/130776420/renufafudezaso-zegifumuxi-fitelosuva.pdfIn PDF document text
    • http://ignitefitness.info/uploads/1/3/0/6/130620868/3588865.pdfIn PDF document text
    • http://allisoninserro.com/uploads/1/3/0/5/130540104/766214.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000ffa5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFFA5 25812 bytes
SHA-256: 11bb4285fac18ee6d41740cc968e28f9bf9a772501a214e79775bf7f304d53a1
font_00_sfnt_off0000d937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD937 1636 bytes
SHA-256: 8c3e96af02b08ba3443cc510220fb02f516919dde3a4996adad1dbfd8c88a3f9
font_01_sfnt_off0000e13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13A 7828 bytes
SHA-256: 8cd8d9937102d8d5be2c8e0eec63b6a1b1068b0e9d4cb41ab0129a42766bcc01

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