Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2d2571c0655c00…

MALICIOUS

PDF

45.0 KB Created: 2020-03-29 01:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 7b9f8948d4af9823e7dd73e1b4bd256d SHA-1: 25eea040a2e95fdf5df036039865df6951a290c4 SHA-256: 7a2d2571c0655c00027dcaf3d03f40845810aeaed070cea7fbce6f3c32c4f344
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of numerous outbound links suggests an attempt to redirect users to potentially malicious websites or engage in SEO manipulation. The document body contains garbled text and a reference to 'que es byod en informatica', which may be a lure.

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://misssoutheastpageantry.us/uploads/1/3/0/6/130620822/130620822.html#que+es+byod+en+informatica PDF link annotation
    • http://www.causefunding.co/uploads/1/3/0/4/130435966/vilimuxotipoda_bonexipufe.pdfIn PDF document text
    • http://apostrofitranslations.com/uploads/1/3/0/6/130639553/9d3a6458a7.pdfIn PDF document text
    • http://craigabarber.com/uploads/1/3/0/6/130640107/sosirogen_bepasa.pdfIn PDF document text
    • http://chhomeservice.com/uploads/1/3/0/6/130621488/8f3a4d.pdfIn PDF document text
    • http://www.vorstandtechnologies.com.au/uploads/1/3/0/7/130776587/dewasutekofazu-fimodekojezowu-rasisozego.pdfIn PDF document text
    • http://atmdye.com/uploads/1/3/0/5/130539269/4615033.pdfIn PDF document text
    • http://hurondd.com/uploads/1/3/0/2/130274241/gebafibejogosima.pdfIn PDF document text
    • http://cruisecatline.com/uploads/1/3/0/3/130313002/wisunazi.pdfIn PDF document text
    • http://aoentlifestyle.com/uploads/1/3/0/2/130289161/menavukowe.pdfIn PDF document text
    • http://inclusiveweddingsasheville.com/uploads/1/3/0/5/130542829/72e1b8791166f0.pdfIn PDF document text
    • http://call-custom-auto-insurance.com/uploads/1/3/0/7/130739678/5d3f7a32204.pdfIn PDF document text
    • http://seraphsnightmare.com/uploads/1/3/0/8/130813710/1478724.pdfIn PDF document text
    • http://www.bristolgoddesstemple.org.uk/uploads/1/3/0/8/130813829/wuvimi.pdfIn PDF document text
    • http://dicemailbags.com/uploads/1/3/0/2/130271121/338f77.pdfIn PDF document text
    • http://surfrescue.club/uploads/1/3/0/2/130288594/4272977.pdfIn PDF document text
    • http://mta-sts.shuswapvalleyestates.com/uploads/1/3/0/2/130287284/xepax-futavidoxazod-tafonopu.pdfIn PDF document text
    • http://tampafldaily.com/uploads/1/3/0/8/130873798/misesatizojorolemaza.pdfIn PDF document text
    • http://kateramlee.com/uploads/1/3/0/4/130435785/vebibofidesuwalajak.pdfIn PDF document text
    • http://jilliankelley.com/uploads/1/3/0/7/130739892/d113319a1012a4d.pdfIn PDF document text
    • http://ogrodyfit.com.pl/uploads/1/3/0/3/130323131/pumuwevunisimudejiv.pdfIn PDF document text
    • http://progressivecommunityoutreach.com/uploads/1/3/0/5/130539403/bozejot-webitojevovok.pdfIn PDF document text
    • http://bitzine.com/uploads/1/3/0/6/130604049/poregosijopunus.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84ED 8924 bytes
SHA-256: 9b75dd228b23fef3ac3eab0bf18e05e779c6dd49b995108c8712ca3d1e453e34

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